diff --git a/.travis.yml b/.travis.yml
index 27f409d..82cf996 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -9,11 +9,13 @@ rvm:
   - 2.3
   - 2.4
   - 2.5
+  - 2.6
 
 env:
   - RAILS_VERSION=4.2
   - RAILS_VERSION=5.0
   - RAILS_VERSION=5.1
+  - RAILS_VERSION=5.2
 
 matrix:
   exclude:
@@ -21,5 +23,15 @@ matrix:
       env: RAILS_VERSION=5.0
     - rvm: 2.2
       env: RAILS_VERSION=5.1
+    - rvm: 2.2
+      env: RAILS_VERSION=5.2
+    - rvm: 2.5
+      env: RAILS_VERSION=4.2
+    - rvm: 2.5
+      env: RAILS_VERSION=5.0
+    - rvm: 2.6
+      env: RAILS_VERSION=4.2
+    - rvm: 2.6
+      env: RAILS_VERSION=5.0
 
 sudo: false
diff --git a/gemfiles/4.2.gemfile b/gemfiles/4.2.gemfile
index 2ca256f..9c5192a 100644
--- a/gemfiles/4.2.gemfile
+++ b/gemfiles/4.2.gemfile
@@ -1,7 +1,8 @@
+gem 'puma'
 gem 'jquery-rails'
 gem 'jquery-ui-rails'
 gem 'ancestry'
-gem 'sqlite3'
+gem 'sqlite3', '~> 1.3.6'
 
 gem 'activeadmin'
 gem 'devise'
diff --git a/gemfiles/5.0.gemfile b/gemfiles/5.0.gemfile
index 564e8fc..3e51040 100644
--- a/gemfiles/5.0.gemfile
+++ b/gemfiles/5.0.gemfile
@@ -1,7 +1,8 @@
+gem 'puma'
 gem 'jquery-rails'
 gem 'jquery-ui-rails'
 gem 'ancestry'
-gem 'sqlite3'
+gem 'sqlite3', '~> 1.3.6'
 
 gem 'activeadmin'
 gem 'devise'
diff --git a/gemfiles/5.1.gemfile b/gemfiles/5.1.gemfile
index 5216d25..da4fdb6 100644
--- a/gemfiles/5.1.gemfile
+++ b/gemfiles/5.1.gemfile
@@ -2,7 +2,7 @@ gem 'puma'
 gem 'jquery-rails'
 gem 'jquery-ui-rails'
 gem 'ancestry'
-gem 'sqlite3'
+gem 'sqlite3', '~> 1.3.6'
 
 gem 'activeadmin'
 gem 'devise'
diff --git a/gemfiles/5.2.gemfile b/gemfiles/5.2.gemfile
new file mode 100644
index 0000000..690a919
--- /dev/null
+++ b/gemfiles/5.2.gemfile
@@ -0,0 +1,12 @@
+gem 'puma'
+gem 'jquery-rails'
+gem 'jquery-ui-rails'
+gem 'ancestry'
+gem 'sqlite3', '~> 1.3.6'
+
+gem 'activeadmin'
+gem 'devise'
+gem 'rails', '~> 5.2.0'
+gem 'sass-rails'
+
+# vim: ft=ruby