diff --git a/pkgs/development/python-modules/pymbolic/default.nix b/pkgs/development/python-modules/pymbolic/default.nix
index 853799497296..23c88ca28d45 100644
--- a/pkgs/development/python-modules/pymbolic/default.nix
+++ b/pkgs/development/python-modules/pymbolic/default.nix
@@ -11,11 +11,11 @@
 
 buildPythonPackage rec {
   pname = "pymbolic";
-  version = "2019.2";
+  version = "2020.1";
 
   src = fetchPypi {
     inherit pname version;
-    sha256 = "a7507864a76574d72bf5732497b247661c6ad73bb277cd9c8aae09e90a62e05a";
+    sha256 = "ca029399f9480f6d51fbac0349fddbb42d937620deb03befa0ba94ac08895e6b";
   };
 
   postConfigure = ''