diff --git a/Gemfile.lock b/Gemfile.lock
index 239e8f3..b3c4d4a 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -3,12 +3,12 @@ GEM
   specs:
     ansi (1.5.0)
     bcrypt_pbkdf (1.1.1)
-    docker-api (2.2.0)
-      excon (>= 0.47.0)
+    docker-api (2.3.0)
+      excon (>= 0.64.0)
       multi_json
     dotenv (3.1.2)
     ed25519 (1.3.0)
-    excon (0.100.0)
+    excon (0.111.0)
     hashie (5.0.0)
     itamae (1.14.1)
       ansi