diff --git a/pkgs/development/python-modules/pynamodb/default.nix b/pkgs/development/python-modules/pynamodb/default.nix
index 74840d72a94d..5016cfb741c5 100644
--- a/pkgs/development/python-modules/pynamodb/default.nix
+++ b/pkgs/development/python-modules/pynamodb/default.nix
@@ -11,11 +11,11 @@
 
 buildPythonPackage rec {
   pname = "pynamodb";
-  version = "4.1.0";
+  version = "4.2.0";
 
   src = fetchPypi {
     inherit pname version;
-    sha256 = "d05d5e2b0f663679ad11421c6fc2cf2f89a2a5843e6ebc372706bf5a78d93762";
+    sha256 = "0njbh3h6696nq5palqa0b8s0fbsvhbawpzl923dnfsa9kgq5m294";
   };
 
   propagatedBuildInputs = [ python-dateutil botocore ];