diff --git a/pkgs/development/python-modules/gigalixir/default.nix b/pkgs/development/python-modules/gigalixir/default.nix
index e7d19091605d..aa5512d99131 100644
--- a/pkgs/development/python-modules/gigalixir/default.nix
+++ b/pkgs/development/python-modules/gigalixir/default.nix
@@ -24,7 +24,9 @@ buildPythonApplication rec {
   };
 
   postPatch = ''
-    substituteInPlace setup.py --replace "'pytest-runner'," ""
+    substituteInPlace setup.py \
+      --replace "'pytest-runner'," "" \
+      --replace "cryptography==" "cryptography>="
   '';
 
   propagatedBuildInputs = [