diff --git a/pkgs/development/python-modules/pixelmatch/default.nix b/pkgs/development/python-modules/pixelmatch/default.nix
index 538135ab73a4..b498025b26d3 100644
--- a/pkgs/development/python-modules/pixelmatch/default.nix
+++ b/pkgs/development/python-modules/pixelmatch/default.nix
@@ -13,13 +13,13 @@ let
 in
 buildPythonPackage rec {
   pname = "pixelmatch";
-  version = "0.3.0";
+  version = "0.4.0";
   pyproject = true;
 
   src = fetchgit {
     url = "https://github.com/whtsky/pixelmatch-py.git";
     tag = "v${version}";
-    hash = "sha256-xq0LT7v83YRz0baw24iDXiuUxiNPMEsiZNIewsH3JPw=";
+    hash = "sha256-tl1y8SASS8XR3ix4DLvwi5OoIs73oxYOF9Z90jPIU4o=";
     fetchLFS = true;
   };