diff --git a/pkgs/development/python-modules/testcontainers/default.nix b/pkgs/development/python-modules/testcontainers/default.nix
index 2998822d5d7f..77f9639c4bac 100644
--- a/pkgs/development/python-modules/testcontainers/default.nix
+++ b/pkgs/development/python-modules/testcontainers/default.nix
@@ -16,14 +16,14 @@
 
 buildPythonPackage rec {
   pname = "testcontainers";
-  version = "4.9.0";
+  version = "4.9.1";
   pyproject = true;
 
   src = fetchFromGitHub {
     owner = "testcontainers";
     repo = "testcontainers-python";
     tag = "testcontainers-v${version}";
-    hash = "sha256-E0g0A3RJY2l/0N6t+/OSXB+Xm2O/9y7FkscXfGm/nKw=";
+    hash = "sha256-qbOtsENvPl+l2ODGyuxmiAoJwU4EIACu1GW5GPP207c=";
   };
 
   postPatch = ''