diff --git a/pkgs/by-name/op/openturns/package.nix b/pkgs/by-name/op/openturns/package.nix
index 347232c44f90..25d97942744b 100644
--- a/pkgs/by-name/op/openturns/package.nix
+++ b/pkgs/by-name/op/openturns/package.nix
@@ -25,13 +25,13 @@
 
 stdenv.mkDerivation (finalAttrs: {
   pname = "openturns";
-  version = "1.25.1";
+  version = "1.26";
 
   src = fetchFromGitHub {
     owner = "openturns";
     repo = "openturns";
     rev = "v${finalAttrs.version}";
-    hash = "sha256-TwM6RvXG4+IBNxH2Ajg9atcaOGlC4kzusH8+6VbI6m4=";
+    hash = "sha256-2z4tTTvDpc+AsPbiL528Y5zNf62v1u4nVaUpk22d+wo=";
   };
 
   nativeBuildInputs = [