diff --git a/Gemfile.lock b/Gemfile.lock
index 93974d60..d0b9f24f 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -151,7 +151,7 @@ GEM
       padrino-support (= 0.15.3)
       tilt (>= 1.4.1, < 3)
     padrino-support (0.15.3)
-    parallel (1.23.0)
+    parallel (1.24.0)
     parslet (2.0.0)
     pdf-reader (2.11.0)
       Ascii85 (~> 1.0)