diff --git a/Jenkinsfile b/Jenkinsfile
index 8462354..d0416fd 100644
--- a/Jenkinsfile
+++ b/Jenkinsfile
@@ -1,7 +1,7 @@
 #!/usr/bin/env groovy
 /*
  * ao-persistence - Highly efficient persistent collections for Java.
- * Copyright (C) 2021, 2022, 2023  AO Industries, Inc.
+ * Copyright (C) 2021, 2022, 2023, 2024  AO Industries, Inc.
  *     support@aoindustries.com
  *     7262 Bull Pen Cir
  *     Mobile, AL 36695
@@ -57,14 +57,14 @@ def upstreamProjects = [
  * Variables that may be defined above this block:                                        *
  *                                                                                        *
  * deployJdk            The version of JDK that will be used for the deploy stage.        *
- *                      Defaults to '20'                                                  *
+ *                      Defaults to '21'                                                  *
  *                                                                                        *
  * buildJdks            The array of JDK versions that will build.                        *
- *                      Defaults to ['11', '17', '20']                                    *
+ *                      Defaults to ['11', '17', '21']                                    *
  *                      Changes must be copied to matrix axes!                            *
  *                                                                                        *
  * testJdks             The array of JDK versions that will test against every build JDK. *
- *                      Defaults to ['11', '17', '20']                                    *
+ *                      Defaults to ['11', '17', '21']                                    *
  *                      Changes must be copied to matrix axes!                            *
  *                                                                                        *
  * upstreamProjects     The array of relative paths to upstream projects.                 *
@@ -150,18 +150,18 @@ def upstreamProjects = [
 
 // JDK versions
 if (!binding.hasVariable('deployJdk')) {
-  binding.setVariable('deployJdk', '20')
+  binding.setVariable('deployJdk', '21')
 }
 if (!binding.hasVariable('buildJdks')) {
   binding.setVariable(
     'buildJdks',
-    ['11', '17', '20'] // Changes must be copied to matrix axes!
+    ['11', '17', '21'] // Changes must be copied to matrix axes!
   )
 }
 if (!binding.hasVariable('testJdks')) {
   binding.setVariable(
     'testJdks',
-    ['11', '17', '20'] // Changes must be copied to matrix axes!
+    ['11', '17', '21'] // Changes must be copied to matrix axes!
   )
 }
 if (!binding.hasVariable('upstreamProjects')) {
@@ -791,7 +791,7 @@ or any build that adds or removes build artifacts."""
         axes {
           axis {
             name 'jdk'
-            values '11', '17', '20' // buildJdks
+            values '11', '17', '21' // buildJdks
           }
         }
         stages {
@@ -837,11 +837,11 @@ or any build that adds or removes build artifacts."""
         axes {
           axis {
             name 'jdk'
-            values '11', '17', '20' // buildJdks
+            values '11', '17', '21' // buildJdks
           }
           axis {
             name 'testJdk'
-            values '11', '17', '20' // testJdks
+            values '11', '17', '21' // testJdks
           }
         }
         stages {
diff --git a/book/Jenkinsfile b/book/Jenkinsfile
index 05f3bdc..ec88ab4 100644
--- a/book/Jenkinsfile
+++ b/book/Jenkinsfile
@@ -1,7 +1,7 @@
 #!/usr/bin/env groovy
 /*
  * ao-persistence - Highly efficient persistent collections for Java.
- * Copyright (C) 2021, 2022, 2023  AO Industries, Inc.
+ * Copyright (C) 2021, 2022, 2023, 2024  AO Industries, Inc.
  *     support@aoindustries.com
  *     7262 Bull Pen Cir
  *     Mobile, AL 36695
@@ -61,14 +61,14 @@ def upstreamProjects = [
  * Variables that may be defined above this block:                                        *
  *                                                                                        *
  * deployJdk            The version of JDK that will be used for the deploy stage.        *
- *                      Defaults to '20'                                                  *
+ *                      Defaults to '21'                                                  *
  *                                                                                        *
  * buildJdks            The array of JDK versions that will build.                        *
- *                      Defaults to ['11', '17', '20']                                    *
+ *                      Defaults to ['11', '17', '21']                                    *
  *                      Changes must be copied to matrix axes!                            *
  *                                                                                        *
  * testJdks             The array of JDK versions that will test against every build JDK. *
- *                      Defaults to ['11', '17', '20']                                    *
+ *                      Defaults to ['11', '17', '21']                                    *
  *                      Changes must be copied to matrix axes!                            *
  *                                                                                        *
  * upstreamProjects     The array of relative paths to upstream projects.                 *
@@ -154,18 +154,18 @@ def upstreamProjects = [
 
 // JDK versions
 if (!binding.hasVariable('deployJdk')) {
-  binding.setVariable('deployJdk', '20')
+  binding.setVariable('deployJdk', '21')
 }
 if (!binding.hasVariable('buildJdks')) {
   binding.setVariable(
     'buildJdks',
-    ['11', '17', '20'] // Changes must be copied to matrix axes!
+    ['11', '17', '21'] // Changes must be copied to matrix axes!
   )
 }
 if (!binding.hasVariable('testJdks')) {
   binding.setVariable(
     'testJdks',
-    ['11', '17', '20'] // Changes must be copied to matrix axes!
+    ['11', '17', '21'] // Changes must be copied to matrix axes!
   )
 }
 if (!binding.hasVariable('upstreamProjects')) {
@@ -795,7 +795,7 @@ or any build that adds or removes build artifacts."""
         axes {
           axis {
             name 'jdk'
-            values '11', '17', '20' // buildJdks
+            values '11', '17', '21' // buildJdks
           }
         }
         stages {
@@ -841,11 +841,11 @@ or any build that adds or removes build artifacts."""
         axes {
           axis {
             name 'jdk'
-            values '11', '17', '20' // buildJdks
+            values '11', '17', '21' // buildJdks
           }
           axis {
             name 'testJdk'
-            values '11', '17', '20' // testJdks
+            values '11', '17', '21' // testJdks
           }
         }
         stages {
diff --git a/book/pom.xml b/book/pom.xml
index 9867760..e670bf6 100644
--- a/book/pom.xml
+++ b/book/pom.xml
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <!--
 ao-persistence - Highly efficient persistent collections for Java.
-Copyright (C) 2020, 2021, 2022, 2023  AO Industries, Inc.
+Copyright (C) 2020, 2021, 2022, 2023, 2024  AO Industries, Inc.
     support@aoindustries.com
     7262 Bull Pen Cir
     Mobile, AL 36695
@@ -169,7 +169,7 @@ along with ao-persistence.  If not, see <https://www.gnu.org/licenses/>.
     <dependencies>
       <!-- Direct -->
       <dependency>
-        <groupId>com.aoapps</groupId><artifactId>ao-badges</artifactId><version>1.10.1${POST-SNAPSHOT}</version>
+        <groupId>com.aoapps</groupId><artifactId>ao-badges</artifactId><version>1.11.0-SNAPSHOT<!-- ${POST-SNAPSHOT} --></version>
       </dependency>
       <dependency>
         <groupId>com.aoapps</groupId><artifactId>ao-taglib</artifactId><version>8.0.0-SNAPSHOT<!-- ${POST-SNAPSHOT} --></version>