diff --git a/Gemfile.lock b/Gemfile.lock
index 5e5b618b1..59e2a53c1 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -15,9 +15,9 @@ GEM
       ffi (~> 1.0, >= 1.0.11)
     coderay (1.1.2)
     concurrent-ruby (1.0.5)
-    coveralls (0.8.21)
+    coveralls (0.8.22)
       json (>= 1.8, < 3)
-      simplecov (~> 0.14.1)
+      simplecov (~> 0.16.1)
       term-ansicolor (~> 1.3)
       thor (~> 0.19.4)
       tins (~> 1.6)
@@ -25,7 +25,7 @@ GEM
       debase-ruby_core_source (>= 0.10.2)
     debase-ruby_core_source (0.10.2)
     diff-lcs (1.3)
-    docile (1.1.5)
+    docile (1.3.1)
     emot (0.0.4)
       thor
     faraday (0.15.1)
@@ -93,8 +93,8 @@ GEM
       childprocess (~> 0.5)
       rubyzip (~> 1.2)
     sequel (5.9.0)
-    simplecov (0.14.1)
-      docile (~> 1.1.0)
+    simplecov (0.16.1)
+      docile (~> 1.1)
       json (>= 1.8, < 3)
       simplecov-html (~> 0.10.0)
     simplecov-html (0.10.2)