diff --git a/pkgs/by-name/h2/h2o/package.nix b/pkgs/by-name/h2/h2o/package.nix
index 6a6df40b8dd5..d908919589d4 100644
--- a/pkgs/by-name/h2/h2o/package.nix
+++ b/pkgs/by-name/h2/h2o/package.nix
@@ -66,7 +66,8 @@ stdenv.mkDerivation (finalAttrs: {
     EXES="$(find "$out/share/h2o" -type f -executable)"
     for exe in $EXES; do
       wrapProgram "$exe" \
-        --set "H2O_PERL" "${lib.getExe perl}"
+        --set "H2O_PERL" "${lib.getExe perl}" \
+        --prefix "PATH" : "${lib.getBin openssl}/bin"
     done
   '';