diff --git a/pkgs/servers/matrix-synapse/default.nix b/pkgs/servers/matrix-synapse/default.nix
index c65627311439..1d8c2737b012 100644
--- a/pkgs/servers/matrix-synapse/default.nix
+++ b/pkgs/servers/matrix-synapse/default.nix
@@ -60,7 +60,7 @@ buildPythonApplication rec {
     typing-extensions
     unpaddedbase64
   ] ++ lib.optional enableSystemd systemd
-    ++ lib.optional enableRedis hiredis;
+    ++ lib.optionals enableRedis [ hiredis txredisapi ];
 
   checkInputs = [ mock parameterized openssl ];