diff --git a/Gemfile.lock b/Gemfile.lock
index 89332fe..da3ca95 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -187,7 +187,7 @@ GEM
       websocket-driver (>= 0.2.0)
     powder (0.3.0)
       thor (>= 0.11.5)
-    power_assert (0.3.0)
+    power_assert (0.3.1)
     pry (0.10.4)
       coderay (~> 1.1.0)
       method_source (~> 0.8.1)