diff --git a/Gemfile.lock b/Gemfile.lock
index 2889576..387b6f1 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -54,7 +54,7 @@ GEM
     builder (3.3.0)
     byebug (12.0.0)
     concurrent-ruby (1.3.5)
-    connection_pool (2.5.5)
+    connection_pool (3.0.1)
     crass (1.0.6)
     drb (2.2.3)
     erubi (1.13.1)
@@ -154,7 +154,7 @@ CHECKSUMS
   builder (3.3.0) sha256=497918d2f9dca528fdca4b88d84e4ef4387256d984b8154e9d5d3fe5a9c8835f
   byebug (12.0.0) sha256=d4a150d291cca40b66ec9ca31f754e93fed8aa266a17335f71bb0afa7fca1a1e
   concurrent-ruby (1.3.5) sha256=813b3e37aca6df2a21a3b9f1d497f8cbab24a2b94cab325bffe65ee0f6cbebc6
-  connection_pool (2.5.5) sha256=e54ff92855753df1fd7c59fa04a398833355f27dd14c074f8c83a05f72a716ad
+  connection_pool (3.0.1) sha256=819ea60fcbee0b557fec6dce41925ec7d24a137a6602587785a9e5a3aaaa6b6c
   crass (1.0.6) sha256=dc516022a56e7b3b156099abc81b6d2b08ea1ed12676ac7a5657617f012bd45d
   drb (2.2.3) sha256=0b00d6fdb50995fe4a45dea13663493c841112e4068656854646f418fda13373
   erubi (1.13.1) sha256=a082103b0885dbc5ecf1172fede897f9ebdb745a4b97a5e8dc63953db1ee4ad9