diff --git a/.travis.yml b/.travis.yml
index 4bd9c29..4dc9207 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -11,6 +11,7 @@ gemfile:
   - gemfiles/Gemfile-rails.4.2.x
   - gemfiles/Gemfile-rails.5.0.x
   - gemfiles/Gemfile-rails.5.1.x
+  - gemfiles/Gemfile-rails.5.2.x
   - gemfiles/Gemfile-rails-edge
 cache:
   bundler: true
diff --git a/gemfiles/Gemfile-rails.4.2.x b/gemfiles/Gemfile-rails.4.2.x
index 6cbacd6..c0cc695 100644
--- a/gemfiles/Gemfile-rails.4.2.x
+++ b/gemfiles/Gemfile-rails.4.2.x
@@ -2,7 +2,7 @@ source "https://rubygems.org"
 
 gem "webpacker", path: ".."
 
-gem "rails", "~> 4.2"
+gem "rails", "~> 4.2.0"
 gem "rake", ">= 11.1"
 gem "rubocop", ">= 0.49", require: false
 gem "rack-proxy", require: false
diff --git a/gemfiles/Gemfile-rails.5.0.x b/gemfiles/Gemfile-rails.5.0.x
index fb7b11b..3f7b8a0 100644
--- a/gemfiles/Gemfile-rails.5.0.x
+++ b/gemfiles/Gemfile-rails.5.0.x
@@ -2,7 +2,7 @@ source "https://rubygems.org"
 
 gem "webpacker", path: ".."
 
-gem "rails", "~> 5.0"
+gem "rails", "~> 5.0.0"
 gem "rake", ">= 11.1"
 gem "rubocop", ">= 0.49", require: false
 gem "rack-proxy", require: false
diff --git a/gemfiles/Gemfile-rails.5.1.x b/gemfiles/Gemfile-rails.5.1.x
index 58b2229..90c8b2e 100644
--- a/gemfiles/Gemfile-rails.5.1.x
+++ b/gemfiles/Gemfile-rails.5.1.x
@@ -2,7 +2,7 @@ source "https://rubygems.org"
 
 gem "webpacker", path: ".."
 
-gem "rails", "~> 5.1"
+gem "rails", "~> 5.1.0"
 gem "rake", ">= 11.1"
 gem "rubocop", ">= 0.49", require: false
 gem "rack-proxy", require: false
diff --git a/gemfiles/Gemfile-rails.5.2.x b/gemfiles/Gemfile-rails.5.2.x
new file mode 100644
index 0000000..28deb15
--- /dev/null
+++ b/gemfiles/Gemfile-rails.5.2.x
@@ -0,0 +1,10 @@
+source "https://rubygems.org"
+
+gem "webpacker", path: ".."
+
+gem "rails", "~> 5.2.0"
+gem "rake", ">= 11.1"
+gem "rubocop", ">= 0.49", require: false
+gem "rack-proxy", require: false
+gem "minitest", "~> 5.0"
+gem "byebug"