diff --git a/pkgs/development/python-modules/pymc/default.nix b/pkgs/development/python-modules/pymc/default.nix
index e8a1a72cc91ef..8930282c898d2 100644
--- a/pkgs/development/python-modules/pymc/default.nix
+++ b/pkgs/development/python-modules/pymc/default.nix
@@ -22,14 +22,14 @@
 
 buildPythonPackage rec {
   pname = "pymc";
-  version = "5.19.1";
+  version = "5.20.0";
   pyproject = true;
 
   src = fetchFromGitHub {
     owner = "pymc-devs";
     repo = "pymc";
     tag = "v${version}";
-    hash = "sha256-Tx3liE/MLInEfNMc7e+YtvXg/hOsfOyJq6FwfmAIwz0=";
+    hash = "sha256-wz45eFmQ55corx0Foz2HdCbeRIewaBye3D/9RsGqQcM=";
   };
 
   postPatch = ''