diff --git a/overlays/python-packages.nix b/overlays/python-packages.nix
index c6cc8d1..99be306 100644
--- a/overlays/python-packages.nix
+++ b/overlays/python-packages.nix
@@ -2,7 +2,7 @@ final: final-py: prev-py: {
   nestml = let
     pname = "nestml";
     # Newer versions require newer antlr4
-    version = "7.0.2";
+    version = "8.3.0";
   in final-py.buildPythonPackage {
     inherit pname version;
 
@@ -10,7 +10,7 @@ final: final-py: prev-py: {
       owner = "nest";
       repo = pname;
       rev = "v${version}";
-      hash = "sha256-BQzwIh2Gdq+rLwIwe7dyltDfEzpaIWGlXF0AfZGBUDw=";
+      hash = "sha256-JR5f8783IlHI1D0kBazl04TwWCJXFmwI7kCtesJxaK8=";
     };
 
     doCheck = false;