1 files changed, 1 insertions, 0 deletions
diff --git a/composer.json b/composer.json
index c5c7ae81d8..711ee82b79 100644
--- a/composer.json
+++ b/composer.json
@@ -7,6 +7,7 @@
   "license": "BSD-3-Clause",
   "require": {
     "php": ">=5.5.0",
+    "ext-grpc": "*",
     "google/protobuf": "v3.1.0-alpha-1"
   },
   "require-dev": {