diff --git a/pkgs/development/python-modules/skorch/default.nix b/pkgs/development/python-modules/skorch/default.nix
index 842ae617b8e0..b916413ab003 100644
--- a/pkgs/development/python-modules/skorch/default.nix
+++ b/pkgs/development/python-modules/skorch/default.nix
@@ -12,6 +12,7 @@
   tqdm,
   flaky,
   llvmPackages,
+  openssl,
   pandas,
   pytest-cov-stub,
   pytestCheckHook,
@@ -45,6 +46,7 @@ buildPythonPackage rec {
 
   nativeCheckInputs = [
     flaky
+    openssl
     pytest-cov-stub
     pytestCheckHook
     safetensors