diff --git a/pkgs/development/python-modules/pytensor/default.nix b/pkgs/development/python-modules/pytensor/default.nix
index d61cf6de4efc..e8e8056ab811 100644
--- a/pkgs/development/python-modules/pytensor/default.nix
+++ b/pkgs/development/python-modules/pytensor/default.nix
@@ -24,7 +24,7 @@
 
 buildPythonPackage rec {
   pname = "pytensor";
-  version = "2.18.5";
+  version = "2.18.6";
   pyproject = true;
 
   disabled = pythonOlder "3.9";
@@ -33,7 +33,7 @@ buildPythonPackage rec {
     owner = "pymc-devs";
     repo = "pytensor";
     rev = "refs/tags/rel-${version}";
-    hash = "sha256-0xwzFmYsec7uQaq6a4BAA6MYy2zIVZ0cTwodVJQ6yMs=";
+    hash = "sha256-SMh4wVZwmc87ztFn2OOI234VP3JzmxVMBkn7lYwVu6M=";
   };
 
   postPatch = ''