diff --git a/pkgs/by-name/fa/fantomas/package.nix b/pkgs/by-name/fa/fantomas/package.nix
index 379d24b6dbbd..ec24db25e11b 100644
--- a/pkgs/by-name/fa/fantomas/package.nix
+++ b/pkgs/by-name/fa/fantomas/package.nix
@@ -2,9 +2,9 @@
 
 buildDotnetGlobalTool {
   pname = "fantomas";
-  version = "6.3.1";
+  version = "6.3.4";
 
-  nugetSha256 = "sha256-mPuY2OwVK6dLtI+L8SIK5i7545VQ0ChhUPdQwBlvcE4=";
+  nugetSha256 = "sha256-1aWqZynBkQoznenGoP0sbf1PcUXAbcHiWyECuv89xa0=";
 
   meta = with lib; {
     description = "F# source code formatter";