diff --git a/Cargo.lock b/Cargo.lock
index 8a212fb6..7c356e32 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -18,9 +18,9 @@ dependencies = [
 
 [[package]]
 name = "activitystreams"
-version = "0.7.0-alpha.18"
+version = "0.7.0-alpha.19"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "40c952a7b1b76c4a7355bf4635ff4e13f4b545bbb7fd75397c9ee1b91ff04c50"
+checksum = "c253285b937c74e3a339d27691ad3cf98f2fd088c9fffdc82857f5b8d8f6b265"
 dependencies = [
  "activitystreams-kinds",
  "iri-string",