diff --git a/.github/scripts/gen-test-certs.sh b/.github/scripts/gen-test-certs.sh
index b51eb9f2..f52d9131 100755
--- a/.github/scripts/gen-test-certs.sh
+++ b/.github/scripts/gen-test-certs.sh
@@ -38,6 +38,7 @@ openssl req \
     -key ./tls/ca.key \
     -days 3650 \
     -subj '/O=Redis Test/CN=Certificate Authority' \
+    -addext 'subjectAltName = DNS:localhost' \
     -out ./tls/ca.crt
 
 cat > ./tls/openssl.cnf <<_END_