diff --git a/pkgs/development/python-modules/environ-config/default.nix b/pkgs/development/python-modules/environ-config/default.nix
index 06e82efea86c..ff5975aba463 100644
--- a/pkgs/development/python-modules/environ-config/default.nix
+++ b/pkgs/development/python-modules/environ-config/default.nix
@@ -12,14 +12,14 @@
 }:
 buildPythonPackage rec {
   pname = "environ-config";
-  version = "24.1.0";
+  version = "26.1.0";
   pyproject = true;
 
   src = fetchFromGitHub {
     repo = "environ-config";
     owner = "hynek";
     tag = version;
-    hash = "sha256-XiJNLQgKhf9hXQfIMsfiEaHx7IHaExhphpYfOBgIT+s=";
+    hash = "sha256-baj61mS4rSLMngrAdmSwupN/2ewo/GDwbZqFTr8fVuE=";
   };
 
   build-system = [