fix
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 5429ae9..da302fc 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -46,6 +46,7 @@
           - name: "macOS / OpenSSL 1.1.x"
             openssl: openssl@1.1
           - name: "macOS / LibreSSL"
+            openssl: libressl
 
     timeout-minutes: 20
     steps: