diff --git a/Gemfile.lock b/Gemfile.lock
index 93c337eb9..cce157c83 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -88,7 +88,7 @@ GEM
       mime-types (>= 1.16)
     celluloid (0.16.0)
       timers (~> 4.0.0)
-    childprocess (0.5.5)
+    childprocess (0.5.6)
       ffi (~> 1.0, >= 1.0.11)
     chunky_png (1.3.4)
     coderay (1.1.0)