diff --git a/Gemfile.lock b/Gemfile.lock
index b4dcef79..aeaf4c01 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -1,8 +1,8 @@
 GEM
   remote: https://rubygems.org/
   specs:
-    addressable (2.5.1)
-      public_suffix (~> 2.0, >= 2.0.2)
+    addressable (2.5.2)
+      public_suffix (>= 2.0.2, < 4.0)
     crack (0.4.3)
       safe_yaml (~> 1.0.0)
     diff-lcs (1.3)
@@ -10,12 +10,12 @@ GEM
     ethon (0.10.1)
       ffi (>= 1.3.0)
     ffi (1.9.18)
-    hashdiff (0.3.5)
+    hashdiff (0.3.6)
     json (2.1.0)
     mini_portile2 (2.2.0)
     nokogiri (1.8.0)
       mini_portile2 (~> 2.2.0)
-    public_suffix (2.0.5)
+    public_suffix (3.0.0)
     rspec (3.6.0)
       rspec-core (~> 3.6.0)
       rspec-expectations (~> 3.6.0)
@@ -34,14 +34,14 @@ GEM
     rspec-support (3.6.0)
     ruby-progressbar (1.8.1)
     safe_yaml (1.0.4)
-    simplecov (0.14.1)
+    simplecov (0.15.0)
       docile (~> 1.1.0)
       json (>= 1.8, < 3)
       simplecov-html (~> 0.10.0)
-    simplecov-html (0.10.1)
+    simplecov-html (0.10.2)
     terminal-table (1.8.0)
       unicode-display_width (~> 1.1, >= 1.1.1)
-    typhoeus (1.1.2)
+    typhoeus (1.3.0)
       ethon (>= 0.9.0)
     unicode-display_width (1.3.0)
     webmock (3.0.1)
@@ -66,4 +66,4 @@ DEPENDENCIES
   yajl-ruby (>= 1.3.0)
 
 BUNDLED WITH
-   1.15.1
+   1.15.4
diff --git a/bin/update_gems b/bin/update_gems
index 99df3bc9..4dbc9670 100755
--- a/bin/update_gems
+++ b/bin/update_gems
@@ -9,4 +9,4 @@ done
 DIR="$( cd -P "$( dirname "$SOURCE" )" && pwd )"
 
 cd $DIR/../
-docker run -it --rm -v "$DIR/../":/wpscan -w /wpscan ruby:2.4 bundle update
+docker run -it --rm -v "$DIR/../":/wpscan -w /wpscan ruby:2.4 /bin/bash -c "gem install bundler; bundle update"