diff --git a/.github/workflows/run_tests_CI.yml b/.github/workflows/run_tests_CI.yml
index a8b7a939..98ea4294 100644
--- a/.github/workflows/run_tests_CI.yml
+++ b/.github/workflows/run_tests_CI.yml
@@ -29,6 +29,12 @@ jobs:
           - Gemfile.next
         ruby:
           - 2.6
+          - 2.7
+        exclude:
+          - gemfile: Gemfile
+            ruby: 2.7
+          - gemfile: Gemfile.next
+            ruby: 2.6
     env: # $BUNDLE_GEMFILE must be set at the job level, so it is set for all steps
       BUNDLE_GEMFILE: ${{ github.workspace }}/${{ matrix.gemfile }}
 
diff --git a/Dockerfile.rails-next b/Dockerfile.rails-next
index 115a8bf0..744eae3c 100644
--- a/Dockerfile.rails-next
+++ b/Dockerfile.rails-next
@@ -1,4 +1,4 @@
-FROM ruby:2.6-slim-buster
+FROM ruby:2.7-slim-buster
 
 WORKDIR /rails_app
 
diff --git a/Gemfile.next.lock b/Gemfile.next.lock
index 19282339..2c815d81 100644
--- a/Gemfile.next.lock
+++ b/Gemfile.next.lock
@@ -388,4 +388,4 @@ DEPENDENCIES
   zoo_stream (~> 1.0)
 
 BUNDLED WITH
-   1.17.2
+   2.4.22