diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 34845fe5..f5083876 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -7,9 +7,9 @@ jobs:
       matrix:
         include:
           - ruby: 3.2
-            gemfile: gemfiles/rails71.gemfile
-          - ruby: 3.1
             gemfile: Gemfile
+          - ruby: 3.1
+            gemfile: gemfiles/rails70.gemfile
           - ruby: "3.0"
             gemfile: gemfiles/rails61.gemfile
     runs-on: ubuntu-latest
diff --git a/Gemfile b/Gemfile
index 7a04528c..538677fd 100644
--- a/Gemfile
+++ b/Gemfile
@@ -2,7 +2,7 @@ source "https://rubygems.org"
 
 gemspec
 
-gem "rails", "~> 7.0.0"
+gem "rails", "~> 7.1.0"
 gem "rake"
 gem "minitest"
 gem "combustion"
@@ -12,6 +12,3 @@ gem "mysql2"
 gem "mongoid"
 gem "browser", "~> 2.0"
 gem "user_agent_parser"
-
-# for https://github.com/ruby/cgi/pull/29
-gem "cgi", ">= 0.3.6"
diff --git a/gemfiles/rails71.gemfile b/gemfiles/rails70.gemfile
similarity index 68%
rename from gemfiles/rails71.gemfile
rename to gemfiles/rails70.gemfile
index 3bf67844..cbb6e2c9 100644
--- a/gemfiles/rails71.gemfile
+++ b/gemfiles/rails70.gemfile
@@ -2,7 +2,7 @@ source "https://rubygems.org"
 
 gemspec path: ".."
 
-gem "rails", "7.1.0.rc2"
+gem "rails", "~> 7.0.0"
 gem "rake"
 gem "minitest"
 gem "combustion"
@@ -12,3 +12,6 @@ gem "mysql2"
 gem "mongoid"
 gem "browser", "~> 2.0"
 gem "user_agent_parser"
+
+# for https://github.com/ruby/cgi/pull/29
+gem "cgi", ">= 0.3.6"