diff --git a/docs/Gemfile.lock b/docs/Gemfile.lock
index 5c81c7d78d717aad58d7f690e18ad2e1cc09fafd..1563945e6ca73f6ce5cd9662d6332b7d74e224a1 100644
--- a/docs/Gemfile.lock
+++ b/docs/Gemfile.lock
@@ -218,7 +218,7 @@ GEM
       mini_portile2 (~> 2.4.0)
     octokit (4.14.0)
       sawyer (~> 0.8.0, >= 0.5.3)
-    parallel (1.18.0)
+    parallel (1.19.0)
     pathutil (0.16.2)
       forwardable-extended (~> 2.6)
     public_suffix (3.1.1)