diff --git a/Gemfile.lock b/Gemfile.lock
index 1a0fe9e..3d5070b 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -48,7 +48,7 @@ GEM
       mini_portile2 (~> 2.5.0)
       racc (~> 1.4)
     parallel (1.20.1)
-    parser (3.0.0.0)
+    parser (3.0.1.1)
       ast (~> 2.4.1)
     pdf-reader (2.4.2)
       Ascii85 (~> 1.0)
@@ -69,7 +69,7 @@ GEM
       http-cookie (>= 1.0.2, < 2.0)
       mime-types (>= 1.16, < 4.0)
       netrc (~> 0.8)
-    rexml (3.2.4)
+    rexml (3.2.5)
     rspec (3.10.0)
       rspec-core (~> 3.10.0)
       rspec-expectations (~> 3.10.0)
@@ -92,12 +92,12 @@ GEM
       rubocop-ast (>= 1.2.0, < 2.0)
       ruby-progressbar (~> 1.7)
       unicode-display_width (>= 1.4.0, < 3.0)
-    rubocop-ast (1.4.1)
-      parser (>= 2.7.1.5)
+    rubocop-ast (1.7.0)
+      parser (>= 3.0.1.1)
     rubocop-performance (1.10.2)
       rubocop (>= 0.90.0, < 2.0)
       rubocop-ast (>= 0.4.0)
-    rubocop-rspec (2.2.0)
+    rubocop-rspec (2.4.0)
       rubocop (~> 1.0)
       rubocop-ast (>= 1.1.0)
     ruby-progressbar (1.11.0)