diff --git a/server/src/apub/extensions/group_extensions.rs b/server/src/apub/extensions/group_extensions.rs
index 2120f6f14..7dc42c4a0 100644
--- a/server/src/apub/extensions/group_extensions.rs
+++ b/server/src/apub/extensions/group_extensions.rs
@@ -1,5 +1,6 @@
 use crate::LemmyError;
-use activitystreams::{ext::Extension, Actor};
+use activitystreams_ext::UnparsedExtension;
+use activitystreams_new::unparsed::UnparsedMutExt;
 use diesel::PgConnection;
 use lemmy_db::{category::Category, Crud};
 use serde::{Deserialize, Serialize};
@@ -37,4 +38,22 @@ impl GroupExtension {
   }
 }
 
-impl<T> Extension<T> for GroupExtension where T: Actor {}
+impl<U> UnparsedExtension<U> for GroupExtension
+where
+  U: UnparsedMutExt,
+{
+  type Error = serde_json::Error;
+
+  fn try_from_unparsed(unparsed_mut: &mut U) -> Result<Self, Self::Error> {
+    Ok(GroupExtension {
+      category: unparsed_mut.remove("category")?,
+      sensitive: unparsed_mut.remove("sensitive")?,
+    })
+  }
+
+  fn try_into_unparsed(self, unparsed_mut: &mut U) -> Result<(), Self::Error> {
+    unparsed_mut.insert("category", self.category)?;
+    unparsed_mut.insert("sensitive", self.sensitive)?;
+    Ok(())
+  }
+}
diff --git a/server/src/apub/extensions/page_extension.rs b/server/src/apub/extensions/page_extension.rs
index 484807e3e..9851a0137 100644
--- a/server/src/apub/extensions/page_extension.rs
+++ b/server/src/apub/extensions/page_extension.rs
@@ -1,4 +1,5 @@
-use activitystreams::{ext::Extension, Base};
+use activitystreams_ext::UnparsedExtension;
+use activitystreams_new::unparsed::UnparsedMutExt;
 use serde::{Deserialize, Serialize};
 
 #[derive(Clone, Debug, Default, Deserialize, Serialize)]
@@ -8,4 +9,22 @@ pub struct PageExtension {
   pub sensitive: bool,
 }
 
-impl<T> Extension<T> for PageExtension where T: Base {}
+impl<U> UnparsedExtension<U> for PageExtension
+where
+  U: UnparsedMutExt,
+{
+  type Error = serde_json::Error;
+
+  fn try_from_unparsed(unparsed_mut: &mut U) -> Result<Self, Self::Error> {
+    Ok(PageExtension {
+      comments_enabled: unparsed_mut.remove("commentsEnabled")?,
+      sensitive: unparsed_mut.remove("sensitive")?,
+    })
+  }
+
+  fn try_into_unparsed(self, unparsed_mut: &mut U) -> Result<(), Self::Error> {
+    unparsed_mut.insert("commentsEnabled", self.comments_enabled)?;
+    unparsed_mut.insert("sensitive", self.sensitive)?;
+    Ok(())
+  }
+}
diff --git a/server/src/apub/extensions/signatures.rs b/server/src/apub/extensions/signatures.rs
index 1c930a958..468e820ec 100644
--- a/server/src/apub/extensions/signatures.rs
+++ b/server/src/apub/extensions/signatures.rs
@@ -1,5 +1,6 @@
 use crate::{apub::ActorType, LemmyError};
-use activitystreams::ext::Extension;
+use activitystreams_ext::UnparsedExtension;
+use activitystreams_new::unparsed::UnparsedMutExt;
 use actix_web::{client::ClientRequest, HttpRequest};
 use http_signature_normalization_actix::{
   digest::{DigestClient, SignExt},
@@ -98,4 +99,20 @@ impl PublicKey {
   }
 }
 
-impl<T> Extension<T> for PublicKeyExtension where T: activitystreams::Actor {}
+impl<U> UnparsedExtension<U> for PublicKeyExtension
+where
+  U: UnparsedMutExt,
+{
+  type Error = serde_json::Error;
+
+  fn try_from_unparsed(unparsed_mut: &mut U) -> Result<Self, Self::Error> {
+    Ok(PublicKeyExtension {
+      public_key: unparsed_mut.remove("publicKey")?,
+    })
+  }
+
+  fn try_into_unparsed(self, unparsed_mut: &mut U) -> Result<(), Self::Error> {
+    unparsed_mut.insert("publicKey", self.public_key)?;
+    Ok(())
+  }
+}