diff --git a/federationapi/internal/perform.go b/federationapi/internal/perform.go
index fccea866..9dbc0e27 100644
--- a/federationapi/internal/perform.go
+++ b/federationapi/internal/perform.go
@@ -150,10 +150,14 @@ func (r *FederationInternalAPI) performJoinUsingServer(
 	if err != nil {
 		return err
 	}
+	room, err := spec.NewRoomID(roomID)
+	if err != nil {
+		return err
+	}
 
 	joinInput := gomatrixserverlib.PerformJoinInput{
 		UserID:        user,
-		RoomID:        roomID,
+		RoomID:        room,
 		ServerName:    serverName,
 		Content:       content,
 		Unsigned:      unsigned,
diff --git a/go.mod b/go.mod
index 04cd27fe..b35e1556 100644
--- a/go.mod
+++ b/go.mod
@@ -22,7 +22,7 @@ require (
 	github.com/matrix-org/dugong v0.0.0-20210921133753-66e6b1c67e2e
 	github.com/matrix-org/go-sqlite3-js v0.0.0-20220419092513-28aa791a1c91
 	github.com/matrix-org/gomatrix v0.0.0-20220926102614-ceba4d9f7530
-	github.com/matrix-org/gomatrixserverlib v0.0.0-20230427151624-793f1829f540
+	github.com/matrix-org/gomatrixserverlib v0.0.0-20230428003202-267b4e79f138
 	github.com/matrix-org/pinecone v0.11.1-0.20230210171230-8c3b24f2649a
 	github.com/matrix-org/util v0.0.0-20221111132719-399730281e66
 	github.com/mattn/go-sqlite3 v1.14.16
diff --git a/go.sum b/go.sum
index f18bde80..73560ea5 100644
--- a/go.sum
+++ b/go.sum
@@ -323,18 +323,8 @@ github.com/matrix-org/go-sqlite3-js v0.0.0-20220419092513-28aa791a1c91 h1:s7fexw
 github.com/matrix-org/go-sqlite3-js v0.0.0-20220419092513-28aa791a1c91/go.mod h1:e+cg2q7C7yE5QnAXgzo512tgFh1RbQLC0+jozuegKgo=
 github.com/matrix-org/gomatrix v0.0.0-20220926102614-ceba4d9f7530 h1:kHKxCOLcHH8r4Fzarl4+Y3K5hjothkVW5z7T1dUM11U=
 github.com/matrix-org/gomatrix v0.0.0-20220926102614-ceba4d9f7530/go.mod h1:/gBX06Kw0exX1HrwmoBibFA98yBk/jxKpGVeyQbff+s=
-github.com/matrix-org/gomatrixserverlib v0.0.0-20230424155704-8daeaebaa0bc h1:F73iHhpTZxWVO6qbyGZxd7Ch44v1gK6xNQZ7QVos/Es=
-github.com/matrix-org/gomatrixserverlib v0.0.0-20230424155704-8daeaebaa0bc/go.mod h1:7HTbSZe+CIdmeqVyFMekwD5dFU8khWQyngKATvd12FU=
-github.com/matrix-org/gomatrixserverlib v0.0.0-20230425114847-3f4aa39cdc54 h1:FiXd7w+dfX9/z0g1r//Xvhvk731mTyTJOWNBqqA6q9Q=
-github.com/matrix-org/gomatrixserverlib v0.0.0-20230425114847-3f4aa39cdc54/go.mod h1:7HTbSZe+CIdmeqVyFMekwD5dFU8khWQyngKATvd12FU=
-github.com/matrix-org/gomatrixserverlib v0.0.0-20230427083830-f2324ed2e085 h1:QRj+06UWlwpZJFAa0AzxlWqRNVnh17vIgR141WSfu98=
-github.com/matrix-org/gomatrixserverlib v0.0.0-20230427083830-f2324ed2e085/go.mod h1:7HTbSZe+CIdmeqVyFMekwD5dFU8khWQyngKATvd12FU=
-github.com/matrix-org/gomatrixserverlib v0.0.0-20230427113737-4a73af377afe h1:+FeGaWZCDw7w3DGZhQW3n0amZ4iW5at/ocErlOFrO58=
-github.com/matrix-org/gomatrixserverlib v0.0.0-20230427113737-4a73af377afe/go.mod h1:7HTbSZe+CIdmeqVyFMekwD5dFU8khWQyngKATvd12FU=
-github.com/matrix-org/gomatrixserverlib v0.0.0-20230427132341-80bb893dc05c h1:qr5H8hWq+qFQXefajLf843wnB5WhppWedWQchlqp6Tc=
-github.com/matrix-org/gomatrixserverlib v0.0.0-20230427132341-80bb893dc05c/go.mod h1:7HTbSZe+CIdmeqVyFMekwD5dFU8khWQyngKATvd12FU=
-github.com/matrix-org/gomatrixserverlib v0.0.0-20230427151624-793f1829f540 h1:T+8YYREEIKM7QFcmOFvh3hv1gPvN0l8LCI+goNfeMO0=
-github.com/matrix-org/gomatrixserverlib v0.0.0-20230427151624-793f1829f540/go.mod h1:7HTbSZe+CIdmeqVyFMekwD5dFU8khWQyngKATvd12FU=
+github.com/matrix-org/gomatrixserverlib v0.0.0-20230428003202-267b4e79f138 h1:zqMuO/4ye8QnSPLhruxTC4cQcXfrvpPwdtT+4kqEgF4=
+github.com/matrix-org/gomatrixserverlib v0.0.0-20230428003202-267b4e79f138/go.mod h1:7HTbSZe+CIdmeqVyFMekwD5dFU8khWQyngKATvd12FU=
 github.com/matrix-org/pinecone v0.11.1-0.20230210171230-8c3b24f2649a h1:awrPDf9LEFySxTLKYBMCiObelNx/cBuv/wzllvCCH3A=
 github.com/matrix-org/pinecone v0.11.1-0.20230210171230-8c3b24f2649a/go.mod h1:HchJX9oKMXaT2xYFs0Ha/6Zs06mxLU8k6F1ODnrGkeQ=
 github.com/matrix-org/util v0.0.0-20221111132719-399730281e66 h1:6z4KxomXSIGWqhHcfzExgkH3Z3UkIXry4ibJS4Aqz2Y=