diff --git a/pkgs/by-name/ov/ovn/package.nix b/pkgs/by-name/ov/ovn/package.nix
index f73fccecb873..867fb1a5ae04 100644
--- a/pkgs/by-name/ov/ovn/package.nix
+++ b/pkgs/by-name/ov/ovn/package.nix
@@ -77,6 +77,7 @@ stdenv.mkDerivation (finalAttrs: {
   doCheck = true;
 
   nativeCheckInputs = [
+    openssl # used to generate certificates used for test services
     procps
   ];