diff --git a/yarn.lock b/yarn.lock
index 49913cf..59a9305 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -935,13 +935,9 @@ combined-stream@^1.0.5, combined-stream@~1.0.5:
   dependencies:
     delayed-stream "~1.0.0"
 
-commander@^2.15.1:
-  version "2.15.1"
-  resolved "https://registry.yarnpkg.com/commander/-/commander-2.15.1.tgz#df46e867d0fc2aec66a34662b406a9ccafff5b0f"
-
-commander@^2.9.0:
-  version "2.11.0"
-  resolved "https://registry.yarnpkg.com/commander/-/commander-2.11.0.tgz#157152fd1e7a6c8d98a5b715cf376df928004563"
+commander@^2.15.1, commander@^2.9.0:
+  version "2.17.0"
+  resolved "https://registry.yarnpkg.com/commander/-/commander-2.17.0.tgz#9d07b25e2a6f198b76d8b756a0e8a9604a6a1a60"
 
 commondir@^1.0.1:
   version "1.0.1"