diff --git a/pkgs/development/tools/convco/default.nix b/pkgs/development/tools/convco/default.nix
index f137cbd078b..6094df8757a 100644
--- a/pkgs/development/tools/convco/default.nix
+++ b/pkgs/development/tools/convco/default.nix
@@ -11,16 +11,16 @@
 
 rustPlatform.buildRustPackage rec {
   pname = "convco";
-  version = "0.3.8";
+  version = "0.3.9";
 
   src = fetchFromGitHub {
     owner = "convco";
     repo = pname;
     rev = "v${version}";
-    sha256 = "sha256-sNVl+bbCj3vPYz4wKOaAHeaPCCubG4XvXZ+AZijhFJE=";
+    sha256 = "sha256-ys7fuaD1jj3tWD6U+BRvqFneZEdKV5c1RO2FLEtqIUk=";
   };
 
-  cargoSha256 = "sha256-FHiX9XpNjBFfs9fwi3Wzq7bAwRi7e/sqtji5WWPA5Qo=";
+  cargoSha256 = "sha256-5/uF0aPNNNUruRF8euuEnGSJHsRehSZipa0677zc12c=";
 
   nativeBuildInputs = [ cmake pkg-config ];