diff --git a/Cargo.lock b/Cargo.lock
index 1270f350..db82d872 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -16,6 +16,21 @@ dependencies = [
  "serde_json",
 ]
 
+[[package]]
+name = "activitystreams"
+version = "0.7.0-alpha.14"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6bcc3fbb392890a1942b1e5cca76cba93c8ed24b5ff50004cc3289afaab3f92c"
+dependencies = [
+ "activitystreams-kinds",
+ "chrono",
+ "mime 0.3.16",
+ "serde 1.0.133",
+ "serde_json",
+ "thiserror",
+ "url 2.2.2",
+]
+
 [[package]]
 name = "activitystreams-derive"
 version = "0.1.1"
@@ -27,6 +42,16 @@ dependencies = [
  "syn 0.13.11",
 ]
 
+[[package]]
+name = "activitystreams-kinds"
+version = "0.1.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0784e99afd032199d3ed70cefb8eb3a8d1aef15f7f2c4e68d033c4e12bb6079e"
+dependencies = [
+ "serde 1.0.133",
+ "url 2.2.2",
+]
+
 [[package]]
 name = "activitystreams-traits"
 version = "0.1.0"
@@ -3136,6 +3161,7 @@ name = "plume-common"
 version = "0.7.1"
 dependencies = [
  "activitypub",
+ "activitystreams",
  "activitystreams-derive",
  "activitystreams-traits",
  "array_tool",
@@ -5232,6 +5258,7 @@ dependencies = [
  "idna 0.2.3",
  "matches",
  "percent-encoding 2.1.0",
+ "serde 1.0.133",
 ]
 
 [[package]]