diff --git a/pkgs/development/libraries/nanopb/default.nix b/pkgs/development/libraries/nanopb/default.nix
index c70298c4ff82..748b02a2ecab 100644
--- a/pkgs/development/libraries/nanopb/default.nix
+++ b/pkgs/development/libraries/nanopb/default.nix
@@ -10,13 +10,13 @@
 
 stdenv.mkDerivation rec {
   pname = "nanopb";
-  version = "0.4.5";
+  version = "0.4.6";
 
   src = fetchFromGitHub {
     owner = pname;
     repo = pname;
     rev = version;
-    sha256 = "0cjfkwwzi018kc0b7lia7z2jdfgibqc99mf8rvj2xq2pfapp9kf1";
+    sha256 = "sha256-B9J+GkgOBR4iZaP6/2ykcjbkifoyhkuukkjK/CLBZj0=";
   };
 
   nativeBuildInputs = [ cmake python3 python3.pkgs.wrapPython ];