diff --git a/pkgs/development/tools/so/default.nix b/pkgs/development/tools/so/default.nix
index 99f9cdcd936..cd52f319bb9 100644
--- a/pkgs/development/tools/so/default.nix
+++ b/pkgs/development/tools/so/default.nix
@@ -2,16 +2,16 @@
 
 rustPlatform.buildRustPackage rec {
   pname = "so";
-  version = "0.4.2";
+  version = "0.4.3";
 
   src = fetchFromGitHub {
     owner = "samtay";
     repo = pname;
     rev = "v${version}";
-    sha256 = "09zswxxli9f5ayjwmvqhkp1yv2s4f435dcfp4cyia1zddbrh2zck";
+    sha256 = "sha256-WAUPB4hhvroE1/8nQcgLVWgGyXcFh7qxdFg6UtQzM9A=";
   };
 
-  cargoSha256 = "1ddbhy1plag4ckbmlyj47wnky7vgmfa68msl3hl25h1lwmzaf1aq";
+  cargoSha256 = "sha256-wt6ClN9fpEAETk3kYeQRieTXnZQe4JEnQiA8CG4ZLog=";
 
   nativeBuildInputs = [ pkg-config ];
   buildInputs = [ openssl ] ++ lib.optionals stdenv.isDarwin [