diff --git a/.circleci/config.yml b/.circleci/config.yml
index 922aae6..cb61af7 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -74,35 +74,14 @@ workflows:
 
       - bundle_and_test:
           name: ruby2-7_rails6-1
-          ruby_version: 2.7.5
+          ruby_version: 2.7.7
           rails_version: 6.1.3.2
       - bundle_and_test:
           name: ruby2-7_rails6-0
-          ruby_version: 2.7.5
+          ruby_version: 2.7.7
           rails_version: 6.0.3.1
       - bundle_and_test:
           name: ruby2-7_rails5-2
-          ruby_version: 2.7.5
+          ruby_version: 2.7.7
           rails_version: 5.2.4.3
 
-      - bundle_and_test:
-          name: ruby2-6_rails6-1
-          ruby_version: 2.6.9
-          rails_version: 6.1.3.2
-      - bundle_and_test:
-          name: ruby2-6_rails6-0
-          ruby_version: 2.6.9
-          rails_version: 6.0.3.1
-      - bundle_and_test:
-          name: ruby2-6_rails5-2
-          ruby_version: 2.6.9
-          rails_version: 5.2.4.3
-
-      - bundle_and_test:
-          name: ruby2-5_rails6-1
-          ruby_version: 2.5.9
-          rails_version: 6.1.3.2
-      - bundle_and_test:
-          name: ruby2-5_rails6-0
-          ruby_version: 2.5.9
-          rails_version: 6.0.3.1