diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 139b35c..c788261 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -18,7 +18,7 @@ jobs:
       - name: Set up Ruby
         uses: ruby/setup-ruby@v1
         with:
-          ruby-version: '4.0'
+          ruby-version: 'ruby'
           rubygems: latest
       - name: Build gem
         run: gem build ruby-plsql.gemspec
@@ -36,7 +36,7 @@ jobs:
       - name: Set up Ruby
         uses: ruby/setup-ruby@v1
         with:
-          ruby-version: 'jruby-10.1.1.0'
+          ruby-version: 'jruby'
           rubygems: latest
       - name: Build gem
         run: gem build ruby-plsql.gemspec
@@ -67,7 +67,7 @@ jobs:
       - name: Set up Ruby
         uses: ruby/setup-ruby@v1
         with:
-          ruby-version: '4.0'
+          ruby-version: 'ruby'
           rubygems: latest
       - name: Configure RubyGems credentials
         uses: rubygems/configure-rubygems-credentials@main
diff --git a/.github/workflows/rubocop.yml b/.github/workflows/rubocop.yml
index 69b80f2..070888e 100644
--- a/.github/workflows/rubocop.yml
+++ b/.github/workflows/rubocop.yml
@@ -13,10 +13,10 @@ jobs:
 
     steps:
     - uses: actions/checkout@v7
-    - name: Set up Ruby 4.0
+    - name: Set up Ruby
       uses: ruby/setup-ruby@v1
       with:
-        ruby-version: "4.0"
+        ruby-version: "ruby"
         rubygems: latest
     - name: Build and run RuboCop
       run: |
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index fb44b43..4d60d34 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -15,7 +15,7 @@ jobs:
           '4.0',
           '3.4',
           '3.3',
-          'jruby-10.1.1.0',
+          'jruby',
         ]
     env:
       NLS_LANG: AMERICAN_AMERICA.AL32UTF8
diff --git a/.github/workflows/test_11g.yml b/.github/workflows/test_11g.yml
index 72d5108..f4405d9 100644
--- a/.github/workflows/test_11g.yml
+++ b/.github/workflows/test_11g.yml
@@ -19,7 +19,7 @@ jobs:
           '4.0',
           '3.4',
           '3.3',
-          'jruby-10.1.1.0',
+          'jruby',
         ]
     env:
       ORACLE_HOME: /opt/oracle/instantclient_21_21
diff --git a/.github/workflows/test_11g_ojdbc11.yml b/.github/workflows/test_11g_ojdbc11.yml
index 235ece3..6d82549 100644
--- a/.github/workflows/test_11g_ojdbc11.yml
+++ b/.github/workflows/test_11g_ojdbc11.yml
@@ -16,7 +16,7 @@ jobs:
     strategy:
       matrix:
         ruby: [
-          'jruby-10.1.1.0'
+          'jruby'
         ]
     env:
       ORACLE_HOME: /opt/oracle/instantclient_21_21
diff --git a/README.md b/README.md
index aceffcd..ca03d9e 100644
--- a/README.md
+++ b/README.md
@@ -12,7 +12,7 @@ ruby-plsql gem provides simple Ruby API for calling Oracle PL/SQL procedures. It
 
 NUMBER, BINARY_INTEGER, PLS_INTEGER, NATURAL, NATURALN, POSITIVE, POSITIVEN, SIGNTYPE, SIMPLE_INTEGER, VARCHAR, VARCHAR2, NVARCHAR2, CHAR, NCHAR, DATE, TIMESTAMP, CLOB, BLOB, BOOLEAN, PL/SQL RECORD, TABLE, VARRAY, OBJECT and CURSOR types are supported for input and output parameters and return values of PL/SQL procedures and functions.
 
-ruby-plsql is tested on CI against Ruby 2.4, 2.5, 2.7, 3.1, 3.2, 3.3, 3.4, 4.0 and JRuby 10.1.1.0. Ruby 2.4–3.1 remain in CI to verify compatibility with older ActiveRecord releases (see gemfiles/). The CI runs the suite against Oracle Database 23ai Free and Oracle Database XE 11g.
+ruby-plsql is tested on CI against Ruby 2.4, 2.5, 2.7, 3.1, 3.2, 3.3, 3.4, 4.0 and the latest stable JRuby release. Ruby 2.4–3.1 remain in CI to verify compatibility with older ActiveRecord releases (see gemfiles/). The CI runs the suite against Oracle Database 23ai Free and Oracle Database XE 11g.
 
 USAGE
 -----