diff --git a/plume-common/src/activity_pub/inbox.rs b/plume-common/src/activity_pub/inbox.rs
index ec63d4fb..513603d2 100644
--- a/plume-common/src/activity_pub/inbox.rs
+++ b/plume-common/src/activity_pub/inbox.rs
@@ -86,7 +86,7 @@ where
     /// - the context to be passed to each handler.
     /// - the activity
     /// - the reason it has not been handled yet
-    NotHandled(&'a C, serde_json::Value, InboxError<E>),
+    NotHandled(&'a mut C, serde_json::Value, InboxError<E>),
 
     /// A matching handler have been found but failed
     ///
@@ -139,16 +139,16 @@ where
     ///
     /// - `ctx`: the context to pass to each handler
     /// - `json`: the JSON representation of the incoming activity
-    pub fn handle(ctx: &'a C, json: serde_json::Value) -> Inbox<'a, C, E, R> {
+    pub fn handle(ctx: &'a mut C, json: serde_json::Value) -> Inbox<'a, C, E, R> {
         Inbox::NotHandled(ctx, json, InboxError::NoMatch)
     }
 
     /// Registers an handler on this Inbox.
     pub fn with<A, V, M>(self) -> Inbox<'a, C, E, R>
     where
-        A: AsActor<&'a C> + FromId<C, Error = E>,
+        A: AsActor<&'a mut C> + FromId<C, Error = E>,
         V: activitypub::Activity,
-        M: AsObject<A, V, &'a C, Error = E> + FromId<C, Error = E>,
+        M: AsObject<A, V, &'a mut C, Error = E> + FromId<C, Error = E>,
         M::Output: Into<R>,
     {
         if let Inbox::NotHandled(ctx, mut act, e) = self {
@@ -264,7 +264,7 @@ pub trait FromId<C>: Sized {
     /// - `object`: optional object that will be used if the object was not found in the database
     ///   If absent, the ID will be dereferenced.
     fn from_id(
-        ctx: &C,
+        ctx: &mut C,
         id: &str,
         object: Option<Self::Object>,
     ) -> Result<Self, (Option<serde_json::Value>, Self::Error)> {
@@ -308,10 +308,10 @@ pub trait FromId<C>: Sized {
     }
 
     /// Builds a `Self` from its ActivityPub representation
-    fn from_activity(ctx: &C, activity: Self::Object) -> Result<Self, Self::Error>;
+    fn from_activity(ctx: &mut C, activity: Self::Object) -> Result<Self, Self::Error>;
 
     /// Tries to find a `Self` with a given ID (`id`), using `ctx` (a database)
-    fn from_db(ctx: &C, id: &str) -> Result<Self, Self::Error>;
+    fn from_db(ctx: &mut C, id: &str) -> Result<Self, Self::Error>;
 }
 
 /// Should be implemented by anything representing an ActivityPub actor.
diff --git a/plume-models/src/blogs.rs b/plume-models/src/blogs.rs
index 2999e31c..db262005 100644
--- a/plume-models/src/blogs.rs
+++ b/plume-models/src/blogs.rs
@@ -132,7 +132,7 @@ impl Blog {
             .map_err(Error::from)
     }
 
-    pub async fn find_by_fqn(c: &PlumeRocket, fqn: &str) -> Result<Blog> {
+    pub async fn find_by_fqn(c: &mut PlumeRocket, fqn: &str) -> Result<Blog> {
         let from_db = blogs::table
             .filter(blogs::fqn.eq(fqn))
             .first(&*c.conn)
@@ -144,7 +144,7 @@ impl Blog {
         }
     }
 
-    async fn fetch_from_webfinger(c: &PlumeRocket, acct: &str) -> Result<Blog> {
+    async fn fetch_from_webfinger(c: &mut PlumeRocket, acct: &str) -> Result<Blog> {
         resolve_with_prefix(Prefix::Group, acct.to_owned(), true)
             .await?
             .links
@@ -340,11 +340,11 @@ impl FromId<PlumeRocket> for Blog {
     type Error = Error;
     type Object = CustomGroup;
 
-    fn from_db(c: &PlumeRocket, id: &str) -> Result<Self> {
+    fn from_db(c: &mut PlumeRocket, id: &str) -> Result<Self> {
         Self::find_by_ap_url(&c.conn, id)
     }
 
-    fn from_activity(c: &PlumeRocket, acct: CustomGroup) -> Result<Self> {
+    fn from_activity(c: &mut PlumeRocket, acct: CustomGroup) -> Result<Self> {
         let url = Url::parse(&acct.object.object_props.id_string()?)?;
         let inst = url.host_str()?;
         let instance = Instance::find_by_domain(&c.conn, inst).or_else(|_| {
@@ -436,7 +436,7 @@ impl FromId<PlumeRocket> for Blog {
     }
 }
 
-impl AsActor<&PlumeRocket> for Blog {
+impl AsActor<&mut PlumeRocket> for Blog {
     fn get_inbox_url(&self) -> String {
         self.inbox_url.clone()
     }
diff --git a/plume-models/src/comments.rs b/plume-models/src/comments.rs
index 7bfc2ff3..03a01b2f 100644
--- a/plume-models/src/comments.rs
+++ b/plume-models/src/comments.rs
@@ -105,7 +105,7 @@ impl Comment {
                 .unwrap_or(false)
     }
 
-    pub async fn to_activity(&self, c: &PlumeRocket) -> Result<Note> {
+    pub async fn to_activity(&self, c: &mut PlumeRocket) -> Result<Note> {
         let author = User::get(&c.conn, self.author_id)?;
         let (html, mentions, _hashtags) = utils::md_to_html(
             self.content.get().as_ref(),
@@ -140,7 +140,7 @@ impl Comment {
         Ok(note)
     }
 
-    pub async fn create_activity(&self, c: &PlumeRocket) -> Result<Create> {
+    pub async fn create_activity(&self, c: &mut PlumeRocket) -> Result<Create> {
         let author = User::get(&c.conn, self.author_id)?;
 
         let note = self.to_activity(c).await?;
@@ -198,11 +198,11 @@ impl FromId<PlumeRocket> for Comment {
     type Error = Error;
     type Object = Note;
 
-    fn from_db(c: &PlumeRocket, id: &str) -> Result<Self> {
+    fn from_db(c: &mut PlumeRocket, id: &str) -> Result<Self> {
         Self::find_by_ap_url(&c.conn, id)
     }
 
-    fn from_activity(c: &PlumeRocket, note: Note) -> Result<Self> {
+    fn from_activity(c: &mut PlumeRocket, note: Note) -> Result<Self> {
         let conn = &*c.conn;
         let comm = {
             let previous_url = note.object_props.in_reply_to.as_ref()?.as_str()?;
@@ -322,21 +322,21 @@ impl FromId<PlumeRocket> for Comment {
     }
 }
 
-impl AsObject<User, Create, &PlumeRocket> for Comment {
+impl AsObject<User, Create, &mut PlumeRocket> for Comment {
     type Error = Error;
     type Output = Self;
 
-    fn activity(self, _c: &PlumeRocket, _actor: User, _id: &str) -> Result<Self> {
+    fn activity(self, _c: &mut PlumeRocket, _actor: User, _id: &str) -> Result<Self> {
         // The actual creation takes place in the FromId impl
         Ok(self)
     }
 }
 
-impl AsObject<User, Delete, &PlumeRocket> for Comment {
+impl AsObject<User, Delete, &mut PlumeRocket> for Comment {
     type Error = Error;
     type Output = ();
 
-    fn activity(self, c: &PlumeRocket, actor: User, _id: &str) -> Result<()> {
+    fn activity(self, c: &mut PlumeRocket, actor: User, _id: &str) -> Result<()> {
         if self.author_id != actor.id {
             return Err(Error::Unauthorized);
         }
diff --git a/plume-models/src/follows.rs b/plume-models/src/follows.rs
index d371e04e..28c3ffa8 100644
--- a/plume-models/src/follows.rs
+++ b/plume-models/src/follows.rs
@@ -136,11 +136,11 @@ impl Follow {
     }
 }
 
-impl AsObject<User, FollowAct, &PlumeRocket> for User {
+impl AsObject<User, FollowAct, &mut PlumeRocket> for User {
     type Error = Error;
     type Output = Follow;
 
-    fn activity(self, c: &PlumeRocket, actor: User, id: &str) -> Result<Follow> {
+    fn activity(self, c: &mut PlumeRocket, actor: User, id: &str) -> Result<Follow> {
         // Mastodon (at least) requires the full Follow object when accepting it,
         // so we rebuilt it here
         let mut follow = FollowAct::default();
@@ -156,11 +156,11 @@ impl FromId<PlumeRocket> for Follow {
     type Error = Error;
     type Object = FollowAct;
 
-    fn from_db(c: &PlumeRocket, id: &str) -> Result<Self> {
+    fn from_db(c: &mut PlumeRocket, id: &str) -> Result<Self> {
         Follow::find_by_ap_url(&c.conn, id)
     }
 
-    fn from_activity(c: &PlumeRocket, follow: FollowAct) -> Result<Self> {
+    fn from_activity(c: &mut PlumeRocket, follow: FollowAct) -> Result<Self> {
         let actor =
             User::from_id(c, &follow.follow_props.actor_link::<Id>()?, None).map_err(|(_, e)| e)?;
 
@@ -170,11 +170,11 @@ impl FromId<PlumeRocket> for Follow {
     }
 }
 
-impl AsObject<User, Undo, &PlumeRocket> for Follow {
+impl AsObject<User, Undo, &mut PlumeRocket> for Follow {
     type Error = Error;
     type Output = ();
 
-    fn activity(self, c: &PlumeRocket, actor: User, _id: &str) -> Result<()> {
+    fn activity(self, c: &mut PlumeRocket, actor: User, _id: &str) -> Result<()> {
         let conn = &*c.conn;
         if self.follower_id == actor.id {
             diesel::delete(&self).execute(conn)?;
diff --git a/plume-models/src/inbox.rs b/plume-models/src/inbox.rs
index 9229f0a4..ca2a4733 100644
--- a/plume-models/src/inbox.rs
+++ b/plume-models/src/inbox.rs
@@ -45,7 +45,7 @@ impl_into_inbox_result! {
     Reshare => Reshared
 }
 
-pub fn inbox(ctx: &PlumeRocket, act: serde_json::Value) -> Result<InboxResult, Error> {
+pub fn inbox(ctx: &mut PlumeRocket, act: serde_json::Value) -> Result<InboxResult, Error> {
     Inbox::handle(ctx, act)
         .with::<User, Announce, Post>()
         .with::<User, Create, Comment>()
@@ -72,7 +72,7 @@ pub(crate) mod tests {
     use diesel::Connection;
 
     pub fn fill_database(
-        rockets: &PlumeRocket,
+        rockets: &mut PlumeRocket,
     ) -> (
         Vec<crate::posts::Post>,
         Vec<crate::users::User>,
diff --git a/plume-models/src/likes.rs b/plume-models/src/likes.rs
index bbb13596..d9d11cb7 100644
--- a/plume-models/src/likes.rs
+++ b/plume-models/src/likes.rs
@@ -83,11 +83,11 @@ impl Like {
     }
 }
 
-impl AsObject<User, activity::Like, &PlumeRocket> for Post {
+impl AsObject<User, activity::Like, &mut PlumeRocket> for Post {
     type Error = Error;
     type Output = Like;
 
-    fn activity(self, c: &PlumeRocket, actor: User, id: &str) -> Result<Like> {
+    fn activity(self, c: &mut PlumeRocket, actor: User, id: &str) -> Result<Like> {
         let res = Like::insert(
             &c.conn,
             NewLike {
@@ -107,11 +107,11 @@ impl FromId<PlumeRocket> for Like {
     type Error = Error;
     type Object = activity::Like;
 
-    fn from_db(c: &PlumeRocket, id: &str) -> Result<Self> {
+    fn from_db(c: &mut PlumeRocket, id: &str) -> Result<Self> {
         Like::find_by_ap_url(&c.conn, id)
     }
 
-    fn from_activity(c: &PlumeRocket, act: activity::Like) -> Result<Self> {
+    fn from_activity(c: &mut PlumeRocket, act: activity::Like) -> Result<Self> {
         let res = Like::insert(
             &c.conn,
             NewLike {
@@ -129,11 +129,11 @@ impl FromId<PlumeRocket> for Like {
     }
 }
 
-impl AsObject<User, activity::Undo, &PlumeRocket> for Like {
+impl AsObject<User, activity::Undo, &mut PlumeRocket> for Like {
     type Error = Error;
     type Output = ();
 
-    fn activity(self, c: &PlumeRocket, actor: User, _id: &str) -> Result<()> {
+    fn activity(self, c: &mut PlumeRocket, actor: User, _id: &str) -> Result<()> {
         let conn = &*c.conn;
         if actor.id == self.user_id {
             diesel::delete(&self).execute(conn)?;
diff --git a/plume-models/src/medias.rs b/plume-models/src/medias.rs
index e0480f4d..38471ea9 100644
--- a/plume-models/src/medias.rs
+++ b/plume-models/src/medias.rs
@@ -197,8 +197,7 @@ impl Media {
     }
 
     // TODO: merge with save_remote?
-    pub async fn from_activity(c: &PlumeRocket, image: &Image) -> Result<Media> {
-        let conn = &*c.conn;
+    pub async fn from_activity(c: &mut PlumeRocket, image: &Image) -> Result<Media> {
         let remote_url = image.object_props.url_string().ok()?;
         let ext = remote_url
             .rsplit('.')
@@ -215,8 +214,22 @@ impl Media {
         let contents = reqwest::get(remote_url.as_str()).await?.bytes().await?;
         dest.write_all(&contents).await?;
 
+        let owner_id = User::from_id(
+            c,
+            image
+                .object_props
+                .attributed_to_link_vec::<Id>()
+                .ok()?
+                .into_iter()
+                .next()?
+                .as_ref(),
+            None,
+        )
+        .map_err(|(_, e)| e)?
+        .id;
+
         Media::insert(
-            conn,
+            &mut c.conn,
             NewMedia {
                 file_path: path.to_str()?.to_string(),
                 alt_text: image.object_props.content_string().ok()?,
@@ -224,19 +237,7 @@ impl Media {
                 remote_url: None,
                 sensitive: image.object_props.summary_string().is_ok(),
                 content_warning: image.object_props.summary_string().ok(),
-                owner_id: User::from_id(
-                    c,
-                    image
-                        .object_props
-                        .attributed_to_link_vec::<Id>()
-                        .ok()?
-                        .into_iter()
-                        .next()?
-                        .as_ref(),
-                    None,
-                )
-                .map_err(|(_, e)| e)?
-                .id,
+                owner_id
             },
         )
     }
diff --git a/plume-models/src/mentions.rs b/plume-models/src/mentions.rs
index e65a16cb..cdb46f9e 100644
--- a/plume-models/src/mentions.rs
+++ b/plume-models/src/mentions.rs
@@ -52,7 +52,7 @@ impl Mention {
         }
     }
 
-    pub async fn build_activity(c: &PlumeRocket, ment: &str) -> Result<link::Mention> {
+    pub async fn build_activity(c: &mut PlumeRocket, ment: &str) -> Result<link::Mention> {
         let user = User::find_by_fqn(c, ment).await?;
         let mut mention = link::Mention::default();
         mention.link_props.set_href_string(user.ap_url)?;
diff --git a/plume-models/src/posts.rs b/plume-models/src/posts.rs
index 3a580a4c..35b464dc 100644
--- a/plume-models/src/posts.rs
+++ b/plume-models/src/posts.rs
@@ -554,12 +554,11 @@ impl FromId<PlumeRocket> for Post {
     type Error = Error;
     type Object = LicensedArticle;
 
-    fn from_db(c: &PlumeRocket, id: &str) -> Result<Self> {
+    fn from_db(c: &mut PlumeRocket, id: &str) -> Result<Self> {
         Self::find_by_ap_url(&c.conn, id)
     }
 
-    fn from_activity(c: &PlumeRocket, article: LicensedArticle) -> Result<Self> {
-        let conn = &*c.conn;
+    fn from_activity(c: &mut PlumeRocket, article: LicensedArticle) -> Result<Self> {
         let searcher = &c.searcher;
         let license = article.custom_props.license_string().unwrap_or_default();
         let article = article.object;
@@ -570,12 +569,12 @@ impl FromId<PlumeRocket> for Post {
             .into_iter()
             .fold((None, vec![]), |(blog, mut authors), link| {
                 let url = link;
-                match User::from_id(&c, &url, None) {
+                match User::from_id(&mut c, &url, None) {
                     Ok(u) => {
                         authors.push(u);
                         (blog, authors)
                     }
-                    Err(_) => (blog.or_else(|| Blog::from_id(&c, &url, None).ok()), authors),
+                    Err(_) => (blog.or_else(|| Blog::from_id(&mut c, &url, None).ok()), authors),
                 }
             });
 
@@ -583,11 +582,11 @@ impl FromId<PlumeRocket> for Post {
 
         let mut r = Runtime::new().unwrap();
         let cover =
-            Some(r.block_on(async { Media::from_activity(&c, &image).await.ok().unwrap().id }));
+            Some(r.block_on(async { Media::from_activity(&mut c, &image).await.ok().unwrap().id }));
 
         let title = article.object_props.name_string()?;
         let post = Post::insert(
-            conn,
+            &mut c.conn,
             NewPost {
                 blog_id: blog?.id,
                 slug: title.to_kebab_case(),
@@ -610,7 +609,7 @@ impl FromId<PlumeRocket> for Post {
 
         for author in authors {
             PostAuthor::insert(
-                conn,
+                &mut c.conn,
                 NewPostAuthor {
                     post_id: post.id,
                     author_id: author.id,
@@ -627,7 +626,7 @@ impl FromId<PlumeRocket> for Post {
         if let Some(serde_json::Value::Array(tags)) = article.object_props.tag {
             for tag in tags {
                 serde_json::from_value::<link::Mention>(tag.clone())
-                    .map(|m| Mention::from_activity(conn, &m, post.id, true, true))
+                    .map(|m| Mention::from_activity(&mut c.conn, &m, post.id, true, true))
                     .ok();
 
                 serde_json::from_value::<Hashtag>(tag.clone())
@@ -635,7 +634,7 @@ impl FromId<PlumeRocket> for Post {
                     .and_then(|t| {
                         let tag_name = t.name_string()?;
                         Ok(Tag::from_activity(
-                            conn,
+                            &mut c.conn,
                             &t,
                             post.id,
                             hashtags.remove(&tag_name),
@@ -651,21 +650,21 @@ impl FromId<PlumeRocket> for Post {
     }
 }
 
-impl AsObject<User, Create, &PlumeRocket> for Post {
+impl AsObject<User, Create, &mut PlumeRocket> for Post {
     type Error = Error;
     type Output = Post;
 
-    fn activity(self, _c: &PlumeRocket, _actor: User, _id: &str) -> Result<Post> {
+    fn activity(self, _c: &mut PlumeRocket, _actor: User, _id: &str) -> Result<Post> {
         // TODO: check that _actor is actually one of the author?
         Ok(self)
     }
 }
 
-impl AsObject<User, Delete, &PlumeRocket> for Post {
+impl AsObject<User, Delete, &mut PlumeRocket> for Post {
     type Error = Error;
     type Output = ();
 
-    fn activity(self, c: &PlumeRocket, actor: User, _id: &str) -> Result<()> {
+    fn activity(self, c: &mut PlumeRocket, actor: User, _id: &str) -> Result<()> {
         let can_delete = self
             .get_authors(&c.conn)?
             .into_iter()
@@ -693,12 +692,12 @@ impl FromId<PlumeRocket> for PostUpdate {
     type Error = Error;
     type Object = LicensedArticle;
 
-    fn from_db(_: &PlumeRocket, _: &str) -> Result<Self> {
+    fn from_db(_: &mut PlumeRocket, _: &str) -> Result<Self> {
         // Always fail because we always want to deserialize the AP object
         Err(Error::NotFound)
     }
 
-    fn from_activity(c: &PlumeRocket, updated: LicensedArticle) -> Result<Self> {
+    fn from_activity(c: &mut PlumeRocket, updated: LicensedArticle) -> Result<Self> {
         let image = updated
             .object
             .object_props
@@ -707,7 +706,7 @@ impl FromId<PlumeRocket> for PostUpdate {
             .unwrap();
         let mut r = Runtime::new().unwrap();
         let cover =
-            Some(r.block_on(async { Media::from_activity(&c, &image).await.ok().unwrap().id }));
+            Some(r.block_on(async { Media::from_activity(&mut c, &image).await.ok().unwrap().id }));
 
         Ok(PostUpdate {
             ap_url: updated.object.object_props.id_string()?,
@@ -727,11 +726,11 @@ impl FromId<PlumeRocket> for PostUpdate {
     }
 }
 
-impl AsObject<User, Update, &PlumeRocket> for PostUpdate {
+impl AsObject<User, Update, &mut PlumeRocket> for PostUpdate {
     type Error = Error;
     type Output = ();
 
-    fn activity(self, c: &PlumeRocket, actor: User, _id: &str) -> Result<()> {
+    fn activity(self, c: &mut PlumeRocket, actor: User, _id: &str) -> Result<()> {
         let conn = &*c.conn;
         let searcher = &c.searcher;
         let mut post = Post::from_id(c, &self.ap_url, None).map_err(|(_, e)| e)?;
diff --git a/plume-models/src/reshares.rs b/plume-models/src/reshares.rs
index 3621cc17..19e391f1 100644
--- a/plume-models/src/reshares.rs
+++ b/plume-models/src/reshares.rs
@@ -107,11 +107,11 @@ impl Reshare {
     }
 }
 
-impl AsObject<User, Announce, &PlumeRocket> for Post {
+impl AsObject<User, Announce, &mut PlumeRocket> for Post {
     type Error = Error;
     type Output = Reshare;
 
-    fn activity(self, c: &PlumeRocket, actor: User, id: &str) -> Result<Reshare> {
+    fn activity(self, c: &mut PlumeRocket, actor: User, id: &str) -> Result<Reshare> {
         let conn = &*c.conn;
         let reshare = Reshare::insert(
             conn,
@@ -132,11 +132,11 @@ impl FromId<PlumeRocket> for Reshare {
     type Error = Error;
     type Object = Announce;
 
-    fn from_db(c: &PlumeRocket, id: &str) -> Result<Self> {
+    fn from_db(c: &mut PlumeRocket, id: &str) -> Result<Self> {
         Reshare::find_by_ap_url(&c.conn, id)
     }
 
-    fn from_activity(c: &PlumeRocket, act: Announce) -> Result<Self> {
+    fn from_activity(c: &mut PlumeRocket, act: Announce) -> Result<Self> {
         let res = Reshare::insert(
             &c.conn,
             NewReshare {
@@ -154,11 +154,11 @@ impl FromId<PlumeRocket> for Reshare {
     }
 }
 
-impl AsObject<User, Undo, &PlumeRocket> for Reshare {
+impl AsObject<User, Undo, &mut PlumeRocket> for Reshare {
     type Error = Error;
     type Output = ();
 
-    fn activity(self, c: &PlumeRocket, actor: User, _id: &str) -> Result<()> {
+    fn activity(self, c: &mut PlumeRocket, actor: User, _id: &str) -> Result<()> {
         let conn = &*c.conn;
         if actor.id == self.user_id {
             diesel::delete(&self).execute(conn)?;
diff --git a/plume-models/src/timeline/mod.rs b/plume-models/src/timeline/mod.rs
index 426c228b..aa0e8871 100644
--- a/plume-models/src/timeline/mod.rs
+++ b/plume-models/src/timeline/mod.rs
@@ -208,7 +208,7 @@ impl Timeline {
             .map_err(Error::from)
     }
 
-    pub fn add_to_all_timelines(rocket: &PlumeRocket, post: &Post, kind: Kind<'_>) -> Result<()> {
+    pub fn add_to_all_timelines(rocket: &mut PlumeRocket, post: &Post, kind: Kind<'_>) -> Result<()> {
         let timelines = timeline_definition::table
             .load::<Self>(rocket.conn.deref())
             .map_err(Error::from)?;
@@ -231,7 +231,7 @@ impl Timeline {
         Ok(())
     }
 
-    pub fn matches(&self, rocket: &PlumeRocket, post: &Post, kind: Kind<'_>) -> Result<bool> {
+    pub fn matches(&self, rocket: &mut PlumeRocket, post: &Post, kind: Kind<'_>) -> Result<bool> {
         let query = TimelineQuery::parse(&self.query)?;
         query.matches(rocket, self, post, kind)
     }
diff --git a/plume-models/src/timeline/query.rs b/plume-models/src/timeline/query.rs
index c9a051c7..97161be3 100644
--- a/plume-models/src/timeline/query.rs
+++ b/plume-models/src/timeline/query.rs
@@ -162,7 +162,7 @@ enum TQ<'a> {
 impl<'a> TQ<'a> {
     fn matches(
         &self,
-        rocket: &PlumeRocket,
+        rocket: &mut PlumeRocket,
         timeline: &Timeline,
         post: &Post,
         kind: Kind<'_>,
@@ -207,7 +207,7 @@ enum Arg<'a> {
 impl<'a> Arg<'a> {
     pub fn matches(
         &self,
-        rocket: &PlumeRocket,
+        rocket: &mut PlumeRocket,
         timeline: &Timeline,
         post: &Post,
         kind: Kind<'_>,
@@ -232,7 +232,7 @@ enum WithList {
 impl WithList {
     pub fn matches(
         &self,
-        rocket: &PlumeRocket,
+        rocket: &mut PlumeRocket,
         timeline: &Timeline,
         post: &Post,
         list: &List<'_>,
@@ -391,7 +391,7 @@ enum Bool {
 impl Bool {
     pub fn matches(
         &self,
-        rocket: &PlumeRocket,
+        rocket: &mut PlumeRocket,
         timeline: &Timeline,
         post: &Post,
         kind: Kind<'_>,
@@ -662,7 +662,7 @@ impl<'a> TimelineQuery<'a> {
 
     pub fn matches(
         &self,
-        rocket: &PlumeRocket,
+        rocket: &mut PlumeRocket,
         timeline: &Timeline,
         post: &Post,
         kind: Kind<'_>,
diff --git a/plume-models/src/users.rs b/plume-models/src/users.rs
index 6135da86..fbcb6012 100644
--- a/plume-models/src/users.rs
+++ b/plume-models/src/users.rs
@@ -189,7 +189,7 @@ impl User {
             .map_err(Error::from)
     }
 
-    pub async fn find_by_fqn(c: &PlumeRocket, fqn: &str) -> Result<User> {
+    pub async fn find_by_fqn(c: &mut PlumeRocket, fqn: &str) -> Result<User> {
         let from_db = users::table
             .filter(users::fqn.eq(fqn))
             .first(&*c.conn)
@@ -201,7 +201,7 @@ impl User {
         }
     }
 
-    async fn fetch_from_webfinger(c: &PlumeRocket, acct: &str) -> Result<User> {
+    async fn fetch_from_webfinger(c: &mut PlumeRocket, acct: &str) -> Result<User> {
         let link = resolve(acct.to_owned(), true)
             .await?
             .links
@@ -245,7 +245,7 @@ impl User {
         Ok(json)
     }
 
-    pub async fn fetch_from_url(c: &PlumeRocket, url: &str) -> Result<User> {
+    pub async fn fetch_from_url(c: &mut PlumeRocket, url: &str) -> Result<User> {
         let json = User::fetch(url).await?;
         User::from_activity(c, json)
     }
@@ -821,11 +821,11 @@ impl FromId<PlumeRocket> for User {
     type Error = Error;
     type Object = CustomPerson;
 
-    fn from_db(c: &PlumeRocket, id: &str) -> Result<Self> {
+    fn from_db(c: &mut PlumeRocket, id: &str) -> Result<Self> {
         Self::find_by_ap_url(&c.conn, id)
     }
 
-    fn from_activity(c: &PlumeRocket, acct: CustomPerson) -> Result<Self> {
+    fn from_activity(c: &mut PlumeRocket, acct: CustomPerson) -> Result<Self> {
         let url = Url::parse(&acct.object.object_props.id_string()?)?;
         let inst = url.host_str()?;
         let instance = Instance::find_by_domain(&c.conn, inst).or_else(|_| {
@@ -917,7 +917,7 @@ impl FromId<PlumeRocket> for User {
     }
 }
 
-impl AsActor<&PlumeRocket> for User {
+impl AsActor<&mut PlumeRocket> for User {
     fn get_inbox_url(&self) -> String {
         self.inbox_url.clone()
     }
@@ -933,11 +933,11 @@ impl AsActor<&PlumeRocket> for User {
     }
 }
 
-impl AsObject<User, Delete, &PlumeRocket> for User {
+impl AsObject<User, Delete, &mut PlumeRocket> for User {
     type Error = Error;
     type Output = ();
 
-    fn activity(self, c: &PlumeRocket, actor: User, _id: &str) -> Result<()> {
+    fn activity(self, c: &mut PlumeRocket, actor: User, _id: &str) -> Result<()> {
         if self.id == actor.id {
             self.delete(&c.conn, &c.searcher).map(|_| ())
         } else {
diff --git a/src/api/mod.rs b/src/api/mod.rs
index 6a3e8136..ffc6f2cf 100644
--- a/src/api/mod.rs
+++ b/src/api/mod.rs
@@ -68,13 +68,12 @@ pub async fn oauth(
     query: Form<OAuthRequest>,
     rockets: PlumeRocket,
 ) -> Result<Json<serde_json::Value>, ApiError> {
-    let conn = &*rockets.conn;
-    let app = App::find_by_client_id(conn, &query.client_id)?;
+    let app = App::find_by_client_id(&rockets.conn, &query.client_id)?;
     if app.client_secret == query.client_secret {
-        if let Ok(user) = User::find_by_fqn(&rockets, &query.username).await {
+        if let Ok(user) = User::find_by_fqn(&mut rockets, &query.username).await {
             if user.auth(&query.password) {
                 let token = ApiToken::insert(
-                    conn,
+                    &rockets.conn,
                     NewApiToken {
                         app_id: app.id,
                         user_id: user.id,
@@ -94,7 +93,7 @@ pub async fn oauth(
             // Making fake password verification to avoid different
             // response times that would make it possible to know
             // if a username is registered or not.
-            User::get(conn, 1)?.auth(&query.password);
+            User::get(&rockets.conn, 1)?.auth(&query.password);
             Ok(Json(json!({
                 "error": "Invalid credentials"
             })))