diff --git a/pkgs/servers/mqtt/flashmq/default.nix b/pkgs/servers/mqtt/flashmq/default.nix
index eb4c607b7804..4603ffbda0c8 100644
--- a/pkgs/servers/mqtt/flashmq/default.nix
+++ b/pkgs/servers/mqtt/flashmq/default.nix
@@ -2,13 +2,13 @@
 
 stdenv.mkDerivation rec {
   pname = "flashmq";
-  version = "1.8.4";
+  version = "1.9.1";
 
   src = fetchFromGitHub {
     owner = "halfgaar";
     repo = "FlashMQ";
     rev = "v${version}";
-    hash = "sha256-CMZim7FSTzjUaViVFq5OABOAUX3Aee+I3/HQhNIdIVM=";
+    hash = "sha256-LxmD/NfD4OJR77erwRnHoe6VRiytqzMlWvRtgY8RD94=";
   };
 
   nativeBuildInputs = [ cmake installShellFiles ];