diff --git a/.travis.yml b/.travis.yml
index 8e501b0dd..8d57d9e29 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -14,42 +14,42 @@ before_install:
 - gem --version
 matrix:
   include:
-  - rvm: 2.1.10
   - rvm: 2.2.6
-  - rvm: 2.3.3
+  - rvm: 2.3.4
+  - rvm: 2.4.1
     script: bundle exec rake $SUITE
     env: SUITE="lint test test:functional"
-  - rvm: 2.3.3
+  - rvm: 2.4.1
     script: bundle exec rake $SUITE
     env: SUITE="test:resources config=test/test.yaml" N=2
-  - rvm: 2.3.3
+  - rvm: 2.4.1
     script: bundle exec rake $SUITE
     env: SUITE="test:resources config=test/test-extra.yaml" N=2
-  - rvm: 2.3.3
+  - rvm: 2.4.1
     bundler_args: "--without guard tools"
     script: bundle exec rake $SUITE
     env: SUITE=test:integration OS=default-ubuntu-1204 DOCKER=true
-  - rvm: 2.3.3
+  - rvm: 2.4.1
     bundler_args: "--without guard tools"
     script: bundle exec rake $SUITE
     env: SUITE=test:integration OS='default-ubuntu-1604' DOCKER=true
-  - rvm: 2.3.3
+  - rvm: 2.4.1
     bundler_args: "--without guard tools"
     script: bundle exec rake $SUITE
     env: SUITE=test:integration OS='default-centos-68' DOCKER=true
-  - rvm: 2.3.3
+  - rvm: 2.4.1
     bundler_args: "--without guard tools"
     script: bundle exec rake $SUITE
     env: SUITE=test:integration OS='default-centos-7' DOCKER=true
-  - rvm: 2.3.3
+  - rvm: 2.4.1
     bundler_args: "--without guard tools"
     script: bundle exec rake $SUITE
     env: SUITE=test:integration OS='default-debian-8' DOCKER=true
-  - rvm: 2.3.3
+  - rvm: 2.4.1
     bundler_args: "--without guard tools"
     script: bundle exec rake $SUITE
     env: SUITE=test:integration OS='default-oracle-72' DOCKER=true
-  - rvm: 2.3.3
+  - rvm: 2.4.1
     bundler_args: "--without guard tools"
     script: bundle exec rake $SUITE
     env: SUITE=test:integration OS='default-fedora-24' DOCKER=true
diff --git a/appveyor.yml b/appveyor.yml
index e42ed4105..f77f7f245 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -6,9 +6,9 @@ environment:
   bundler_url: https://rubygems.org/downloads/bundler-1.9.9.gem
 
   matrix:
-    - ruby_version: "21"
     - ruby_version: "22"
     - ruby_version: "23"
+    - ruby_version: "24"
 
 clone_folder: c:\projects\inspec
 clone_depth: 1