diff --git a/pkgs/by-name/of/offat/package.nix b/pkgs/by-name/of/offat/package.nix
index 46bbba00f771..83bb81df0fc8 100644
--- a/pkgs/by-name/of/offat/package.nix
+++ b/pkgs/by-name/of/offat/package.nix
@@ -18,7 +18,10 @@ python3.pkgs.buildPythonApplication rec {
 
   sourceRoot = "${src.name}/src";
 
-  pythonRelaxDeps = [ "setuptools" ];
+  pythonRelaxDeps = [
+    "setuptools"
+    "tenacity"
+  ];
 
   build-system = with python3.pkgs; [ poetry-core ];