diff --git a/pkgs/servers/mastodon/source.nix b/pkgs/servers/mastodon/source.nix
index f3e751f8e143..e8fd6f117e24 100644
--- a/pkgs/servers/mastodon/source.nix
+++ b/pkgs/servers/mastodon/source.nix
@@ -5,14 +5,14 @@
   patches ? [ ],
 }:
 let
-  version = "4.3.6";
+  version = "4.3.7";
 in
 (applyPatches {
   src = fetchFromGitHub {
     owner = "mastodon";
     repo = "mastodon";
     rev = "v${version}";
-    hash = "sha256-cTJmSrQ+xlDfrAyHKeiIvrUOgAh9DQT2NNizN8XT3P0=";
+    hash = "sha256-KmeWBMuyJ/ZdZnFXAlpvgXV+J8IZrcaTXvvui4l6mjY=";
   };
   patches = patches ++ [ ./downgrade-bundler-version.patch ];
 })