diff --git a/pkgs/tools/graphics/blockhash/default.nix b/pkgs/tools/graphics/blockhash/default.nix
index c48b85cedb2..5ddf8185b3c 100644
--- a/pkgs/tools/graphics/blockhash/default.nix
+++ b/pkgs/tools/graphics/blockhash/default.nix
@@ -2,13 +2,13 @@
 
 stdenv.mkDerivation rec {
   name = "blockhash-${version}";
-  version = "0.3";
+  version = "0.3.1";
 
   src = fetchFromGitHub {
     owner = "commonsmachinery";
     repo = "blockhash";
     rev = "v${version}";
-    sha256 = "15iwljpkykn2711jhls7cwkb23gk6iawlvvk4prl972wic2wlxcj";
+    sha256 = "0m7ikppl42iicgmwsb7baajmag7v0p1ab06xckifvrr0zm21bq9p";
   };
 
   nativeBuildInputs = [ python pkgconfig ];