diff --git a/pkgs/development/python-modules/pg8000/default.nix b/pkgs/development/python-modules/pg8000/default.nix
index e4a158a7183..4bbd9920623 100644
--- a/pkgs/development/python-modules/pg8000/default.nix
+++ b/pkgs/development/python-modules/pg8000/default.nix
@@ -7,13 +7,13 @@
 
 buildPythonPackage rec {
   pname = "pg8000";
-  version = "1.16.5";
+  version = "1.16.6";
 
   disabled = !isPy3k;
 
   src = fetchPypi {
     inherit pname version;
-    sha256 = "8af70cdfcc1fadafa32468a6af563e1c0b5271c4dcc99a4490030a128cb295a3";
+    sha256 = "8fc1e6a62ccb7c9830f1e7e9288e2d20eaf373cc8875b5c55b7d5d9b7717be91";
   };
 
   propagatedBuildInputs = [ passlib ];