diff --git a/Cargo.lock b/Cargo.lock
index 18375234..c7624b67 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -3758,7 +3758,7 @@ dependencies = [
 [[package]]
 name = "ruma"
 version = "0.10.1"
-source = "git+https://forgejo.ellis.link/continuwuation/ruwuma?rev=d6870a7fb7f6cccff63f7fd0ff6c581bad80e983#d6870a7fb7f6cccff63f7fd0ff6c581bad80e983"
+source = "git+https://forgejo.ellis.link/continuwuation/ruwuma?rev=97048c0a535a2b895079518b7b9b20fcd144ad5f#97048c0a535a2b895079518b7b9b20fcd144ad5f"
 dependencies = [
  "assign",
  "js_int",
@@ -3778,7 +3778,7 @@ dependencies = [
 [[package]]
 name = "ruma-appservice-api"
 version = "0.10.0"
-source = "git+https://forgejo.ellis.link/continuwuation/ruwuma?rev=d6870a7fb7f6cccff63f7fd0ff6c581bad80e983#d6870a7fb7f6cccff63f7fd0ff6c581bad80e983"
+source = "git+https://forgejo.ellis.link/continuwuation/ruwuma?rev=97048c0a535a2b895079518b7b9b20fcd144ad5f#97048c0a535a2b895079518b7b9b20fcd144ad5f"
 dependencies = [
  "js_int",
  "ruma-common",
@@ -3790,7 +3790,7 @@ dependencies = [
 [[package]]
 name = "ruma-client-api"
 version = "0.18.0"
-source = "git+https://forgejo.ellis.link/continuwuation/ruwuma?rev=d6870a7fb7f6cccff63f7fd0ff6c581bad80e983#d6870a7fb7f6cccff63f7fd0ff6c581bad80e983"
+source = "git+https://forgejo.ellis.link/continuwuation/ruwuma?rev=97048c0a535a2b895079518b7b9b20fcd144ad5f#97048c0a535a2b895079518b7b9b20fcd144ad5f"
 dependencies = [
  "as_variant",
  "assign",
@@ -3813,7 +3813,7 @@ dependencies = [
 [[package]]
 name = "ruma-common"
 version = "0.13.0"
-source = "git+https://forgejo.ellis.link/continuwuation/ruwuma?rev=d6870a7fb7f6cccff63f7fd0ff6c581bad80e983#d6870a7fb7f6cccff63f7fd0ff6c581bad80e983"
+source = "git+https://forgejo.ellis.link/continuwuation/ruwuma?rev=97048c0a535a2b895079518b7b9b20fcd144ad5f#97048c0a535a2b895079518b7b9b20fcd144ad5f"
 dependencies = [
  "as_variant",
  "base64 0.22.1",
@@ -3845,7 +3845,7 @@ dependencies = [
 [[package]]
 name = "ruma-events"
 version = "0.28.1"
-source = "git+https://forgejo.ellis.link/continuwuation/ruwuma?rev=d6870a7fb7f6cccff63f7fd0ff6c581bad80e983#d6870a7fb7f6cccff63f7fd0ff6c581bad80e983"
+source = "git+https://forgejo.ellis.link/continuwuation/ruwuma?rev=97048c0a535a2b895079518b7b9b20fcd144ad5f#97048c0a535a2b895079518b7b9b20fcd144ad5f"
 dependencies = [
  "as_variant",
  "indexmap 2.8.0",
@@ -3870,7 +3870,7 @@ dependencies = [
 [[package]]
 name = "ruma-federation-api"
 version = "0.9.0"
-source = "git+https://forgejo.ellis.link/continuwuation/ruwuma?rev=d6870a7fb7f6cccff63f7fd0ff6c581bad80e983#d6870a7fb7f6cccff63f7fd0ff6c581bad80e983"
+source = "git+https://forgejo.ellis.link/continuwuation/ruwuma?rev=97048c0a535a2b895079518b7b9b20fcd144ad5f#97048c0a535a2b895079518b7b9b20fcd144ad5f"
 dependencies = [
  "bytes",
  "headers",
@@ -3892,7 +3892,7 @@ dependencies = [
 [[package]]
 name = "ruma-identifiers-validation"
 version = "0.9.5"
-source = "git+https://forgejo.ellis.link/continuwuation/ruwuma?rev=d6870a7fb7f6cccff63f7fd0ff6c581bad80e983#d6870a7fb7f6cccff63f7fd0ff6c581bad80e983"
+source = "git+https://forgejo.ellis.link/continuwuation/ruwuma?rev=97048c0a535a2b895079518b7b9b20fcd144ad5f#97048c0a535a2b895079518b7b9b20fcd144ad5f"
 dependencies = [
  "js_int",
  "thiserror 2.0.12",
@@ -3901,7 +3901,7 @@ dependencies = [
 [[package]]
 name = "ruma-identity-service-api"
 version = "0.9.0"
-source = "git+https://forgejo.ellis.link/continuwuation/ruwuma?rev=d6870a7fb7f6cccff63f7fd0ff6c581bad80e983#d6870a7fb7f6cccff63f7fd0ff6c581bad80e983"
+source = "git+https://forgejo.ellis.link/continuwuation/ruwuma?rev=97048c0a535a2b895079518b7b9b20fcd144ad5f#97048c0a535a2b895079518b7b9b20fcd144ad5f"
 dependencies = [
  "js_int",
  "ruma-common",
@@ -3911,7 +3911,7 @@ dependencies = [
 [[package]]
 name = "ruma-macros"
 version = "0.13.0"
-source = "git+https://forgejo.ellis.link/continuwuation/ruwuma?rev=d6870a7fb7f6cccff63f7fd0ff6c581bad80e983#d6870a7fb7f6cccff63f7fd0ff6c581bad80e983"
+source = "git+https://forgejo.ellis.link/continuwuation/ruwuma?rev=97048c0a535a2b895079518b7b9b20fcd144ad5f#97048c0a535a2b895079518b7b9b20fcd144ad5f"
 dependencies = [
  "cfg-if",
  "proc-macro-crate",
@@ -3926,7 +3926,7 @@ dependencies = [
 [[package]]
 name = "ruma-push-gateway-api"
 version = "0.9.0"
-source = "git+https://forgejo.ellis.link/continuwuation/ruwuma?rev=d6870a7fb7f6cccff63f7fd0ff6c581bad80e983#d6870a7fb7f6cccff63f7fd0ff6c581bad80e983"
+source = "git+https://forgejo.ellis.link/continuwuation/ruwuma?rev=97048c0a535a2b895079518b7b9b20fcd144ad5f#97048c0a535a2b895079518b7b9b20fcd144ad5f"
 dependencies = [
  "js_int",
  "ruma-common",
@@ -3938,7 +3938,7 @@ dependencies = [
 [[package]]
 name = "ruma-signatures"
 version = "0.15.0"
-source = "git+https://forgejo.ellis.link/continuwuation/ruwuma?rev=d6870a7fb7f6cccff63f7fd0ff6c581bad80e983#d6870a7fb7f6cccff63f7fd0ff6c581bad80e983"
+source = "git+https://forgejo.ellis.link/continuwuation/ruwuma?rev=97048c0a535a2b895079518b7b9b20fcd144ad5f#97048c0a535a2b895079518b7b9b20fcd144ad5f"
 dependencies = [
  "base64 0.22.1",
  "ed25519-dalek",
diff --git a/Cargo.toml b/Cargo.toml
index 43cd3f4f..36a11998 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -350,7 +350,7 @@ version = "0.1.2"
 [workspace.dependencies.ruma]
 git = "https://forgejo.ellis.link/continuwuation/ruwuma"
 #branch = "conduwuit-changes"
-rev = "d6870a7fb7f6cccff63f7fd0ff6c581bad80e983"
+rev = "97048c0a535a2b895079518b7b9b20fcd144ad5f"
 features = [
     "compat",
     "rand",
diff --git a/src/api/server/invite.rs b/src/api/server/invite.rs
index f53e1a15..b649311e 100644
--- a/src/api/server/invite.rs
+++ b/src/api/server/invite.rs
@@ -113,6 +113,42 @@ pub(crate) async fn create_invite_route(
 
 	invite_state.push(pdu.to_stripped_state_event());
 
+	// Check the invite against any user_may_invite callbacks
+	for appservice in services.appservice.read().await.values() {
+		if let Some(callbacks) = &appservice.registration.callbacks {
+			if callbacks.user_may_invite.is_some() {
+				let resp = services
+					.sending
+					.send_appservice_request(
+						appservice.registration.clone(),
+						ruma::api::appservice::callback::user_may_invite::unstable::Request::new(
+							sender.to_owned(),
+							invited_user.clone(),
+							body.room_id.clone(),
+						),
+					)
+					.await?;
+				let as_id = &appservice.registration.id;
+				match resp {
+					| None => {
+						warn!(
+							"Failed to contact appservice {as_id} for user_may_invite callback."
+						);
+						return Err!(Request(Forbidden("User may not invite.")));
+					},
+					| Some(r) => {
+						if !r.ok {
+							let reason = r.reason.unwrap_or_else(|| "No reason".to_string());
+							warn!("Appservice {as_id} denied user_may_invite callback: {reason}");
+							return Err!(Request(Forbidden("User may not invite: {reason}")));
+						}
+						// Otherwise, continue
+					},
+				}
+			}
+		}
+	}
+
 	// If we are active in the room, the remote server will notify us about the
 	// join/invite through /send. If we are not in the room, we need to manually
 	// record the invited state for client /sync through update_membership(), and