diff --git a/Gemfile.lock b/Gemfile.lock
index e02c53b2..2f2f58b5 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -193,7 +193,7 @@ GEM
       thread_safe (~> 0.3, >= 0.3.1)
     diff-lcs (1.5.1)
     docile (1.4.0)
-    dockerfile-rails (1.6.8)
+    dockerfile-rails (1.6.9)
       rails (>= 3.0.0)
     dotenv (3.1.0)
     dotenv-rails (3.1.0)