diff --git a/.github/dependabot.yml b/.github/dependabot.yml
index 08a1e926b..78781c9d9 100644
--- a/.github/dependabot.yml
+++ b/.github/dependabot.yml
@@ -7,6 +7,8 @@ updates:
     schedule:
       interval: weekly
       day: monday
+      time: "06:00"
+      timezone: Europe/London
     target-branch: main
     assignees:
       - ascopes
@@ -19,6 +21,8 @@ updates:
     schedule:
       interval: weekly
       day: monday
+      time: "06:00"
+      timezone: Europe/London
     target-branch: main
     assignees:
       - ascopes
diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index c376e7ac9..3e850e7cf 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -4,9 +4,11 @@ on:
   pull_request:
     branches:
       - main
+      - v*
   push:
     branches:
       - main
+      - v*
   workflow_call: {}
   workflow_dispatch: {}
 
@@ -23,19 +25,34 @@ jobs:
           - 11  # LTS
           - 17  # LTS
           - 21  # LTS
+          - GA  # General access
+        include:
+          - os-name: windows-latest
+            java-version: GA
+          - os-name: macos-latest
+            java-version: GA
+
     steps:
       - name: Checkout repository
         uses: actions/checkout@v4
         with:
           fetch-depth: 2
 
-      - name: Initialize JDK
+      - name: Initialize Zulu JDK
+        if: matrix.java-version != 'GA'
         uses: actions/setup-java@v4
         with:
           check-latest: true
           distribution: zulu
           java-version: ${{ matrix.java-version }}
 
+      - name: Initialize Oracle JDK
+        if: matrix.java-version == 'GA'
+        uses: oracle-actions/setup-java@v1
+        with:
+          website: jdk.java.net
+          release: ${{ matrix.java-version }}
+
       - name: Maven cache
         uses: actions/cache@v4
         env:
@@ -44,7 +61,7 @@ jobs:
           path:
             ~/.m2
           key: build-${{ env.cache-name }}
-          
+
       - name: Compile and run tests
         shell: bash
         run: ./mvnw -B -U clean verify
@@ -66,3 +83,22 @@ jobs:
             **/failsafe-reports/**
             **/build*.log
           retention-days: 30
+
+  notify-coverage:
+    name: Notify of coverage
+    runs-on: ubuntu-latest
+    timeout-minutes: 30
+    needs:
+      - build
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Publish code coverage
+        uses: codecov/codecov-action@v5
+        continue-on-error: true
+        if: always()
+        with:
+          token: ${{ secrets.CODECOV_TOKEN }}
+          fail_ci_if_error: true
+          run_command: send-notifications
diff --git a/.github/workflows/deploy.yml b/.github/workflows/deploy.yml
index ece119b1c..17ab6bc1a 100644
--- a/.github/workflows/deploy.yml
+++ b/.github/workflows/deploy.yml
@@ -1,4 +1,4 @@
-name: Deploy a branch
+name: Release New Version
 
 on:
   workflow_dispatch:
@@ -8,14 +8,19 @@ on:
         default: false
         type: boolean
 
+      skip-tests:
+        description: "Skip unit and integration tests"
+        default: false
+        type: boolean
+
       version:
         description: "Override deployment version"
         default: ""
         type: string
 
 jobs:
-  maven-central:
-    name: Deploy to Maven Central
+  release:
+    name: Release
     environment:
       name: maven-central
       url: https://repo1.maven.org/maven2/io/github/ascopes/jct/java-compiler-testing/
@@ -35,26 +40,21 @@ jobs:
         uses: actions/setup-java@v4
         with:
           distribution: zulu
-          # Must use >= JDK 17 for Javadocs to generate correctly
-          java-version: 23
-          server-id: ossrh
-          server-username: OSSRH_USERNAME
-          server-password: OSSRH_TOKEN
+          java-version: 21
+          server-id: central
+          server-username: CENTRAL_USERNAME
+          server-password: CENTRAL_TOKEN
           gpg-passphrase: GPG_PASSPHRASE
           gpg-private-key: ${{ secrets.GPG_PRIVATE_KEY }}
 
-      - name: Deploy to staging
-        shell: bash
+      - name: Configure Git
         run: |-
           git config user.name '${{ github.actor }}'
           git config user.email '${{ github.actor }}@users.noreply.github.com'
 
-          group_id="$(./mvnw help:evaluate -q -DforceStdout -Dexpression="project.groupId")"
-          echo "group_id=${group_id}" >> "${GITHUB_ENV}"
-
-          artifact_id="$(./mvnw help:evaluate -q -DforceStdout -Dexpression="project.artifactId")"
-          echo "artifact_id=${artifact_id}" >> "${GITHUB_ENV}"
-
+      - name: Create Maven Central Release
+        shell: bash
+        run: |-
           if [[ '${{ inputs.version }}' == "" ]]; then
             release_version="$(./mvnw -B help:evaluate -Dexpression=project.version -q -DforceStdout | sed 's/-SNAPSHOT//g')"
           else
@@ -65,39 +65,19 @@ jobs:
           ./mvnw -B -e \
               -Preleases \
               -DdryRun='${{ inputs.dry-run }}' \
+              -Dinvoker.skip='${{ inputs.skip-tests }}' \
               -Dpassword='${{ secrets.GITHUB_TOKEN }}' \
               -DreleaseVersion="${release_version}" \
               -DsignTag=false \
+              -DskipTests='${{ inputs.skip-tests }}' \
               -Dtag="v${release_version}" \
               clean verify release:prepare release:perform
-
-          echo "Created staging release for ${group_id}/${artifact_id}/${release_version}"
         env:
-          OSSRH_USERNAME: ${{ secrets.OSSRH_USERNAME }}
-          OSSRH_TOKEN: ${{ secrets.OSSRH_TOKEN }}
+          CENTRAL_USERNAME: ${{ secrets.CENTRAL_USERNAME }}
+          CENTRAL_TOKEN: ${{ secrets.CENTRAL_TOKEN }}
           GPG_PASSPHRASE: ${{ secrets.GPG_PASSPHRASE }}
 
-      - name: Promote Maven Central Staging Release
-        if: ${{ ! inputs.dry-run }}
-        shell: bash
-        run: |-
-          echo "Will now promote ${group_id}/${artifact_id}/${release_version} to Maven Central"
-
-          ./scripts/close-nexus-repository.sh \
-              -u "${OSSRH_USERNAME}" \
-              -p "${OSSRH_TOKEN}" \
-              -g "${group_id}" \
-              -a "${artifact_id}" \
-              -v "${release_version}" \
-              -s "https://s01.oss.sonatype.org/"
-
-          echo "Promoted staging ${group_id}/${artifact_id}/${release_version} to Maven Central successfully"
-        env:
-          OSSRH_USERNAME: ${{ secrets.OSSRH_USERNAME }}
-          OSSRH_TOKEN: ${{ secrets.OSSRH_TOKEN }}
-          GPG_PASSPHRASE: ${{ secrets.GPG_PASSPHRASE }}
-
-      - name: Abort and rollback staging release
+      - name: Revert Maven Central Release
         if: ${{ failure() }}
         run: |-
           ./mvnw -B -e \
@@ -105,10 +85,6 @@ jobs:
               -DreleaseVersion="${release_version}" \
               -Dtag="v${release_version}" \
               release:rollback
-        env:
-          OSSRH_USERNAME: ${{ secrets.OSSRH_USERNAME }}
-          OSSRH_TOKEN: ${{ secrets.OSSRH_TOKEN }}
-          GPG_PASSPHRASE: ${{ secrets.GPG_PASSPHRASE }}
 
       - name: Create GitHub Release
         if: ${{ ! inputs.dry-run }}
diff --git a/.github/workflows/security.yml b/.github/workflows/security.yml
index 365c0097f..2b8493db8 100644
--- a/.github/workflows/security.yml
+++ b/.github/workflows/security.yml
@@ -3,6 +3,7 @@ on:
   push:
     branches:
       - main
+      - v5
 
 jobs:
   submit-dependency-snapshot:
diff --git a/.mvn/wrapper/maven-wrapper.properties b/.mvn/wrapper/maven-wrapper.properties
index d58dfb70b..2f94e6169 100644
--- a/.mvn/wrapper/maven-wrapper.properties
+++ b/.mvn/wrapper/maven-wrapper.properties
@@ -16,4 +16,4 @@
 # under the License.
 wrapperVersion=3.3.2
 distributionType=only-script
-distributionUrl=https://repo.maven.apache.org/maven2/org/apache/maven/apache-maven/3.9.9/apache-maven-3.9.9-bin.zip
+distributionUrl=https://repo.maven.apache.org/maven2/org/apache/maven/apache-maven/3.9.10/apache-maven-3.9.10-bin.zip
diff --git a/README.md b/README.md
index 1b4213a87..0d1f35699 100644
--- a/README.md
+++ b/README.md
@@ -1,4 +1,5 @@
-![Java 11+](https://img.shields.io/badge/Java-11--24-brown?logo=openjdk&logoColor=white)
+![Java 11+](https://img.shields.io/badge/V4-jdk11%2B-green?logo=openjdk&logoColor=white)
+![Java 17+](https://img.shields.io/badge/V5-jdk17%2B-blue?logo=openjdk&logoColor=white)
 [![Build Status](https://github.com/ascopes/java-compiler-testing/actions/workflows/build.yml/badge.svg?branch=main)](https://github.com/ascopes/java-compiler-testing/actions/workflows/build.yml)
 [![Maven Central](https://img.shields.io/maven-central/v/io.github.ascopes.jct/java-compiler-testing)](https://repo1.maven.org/maven2/io/github/ascopes/jct/java-compiler-testing)
 [![Code Coverage](https://codecov.io/gh/ascopes/java-compiler-testing/branch/main/graph/badge.svg?token=VT74BP2742)](https://codecov.io/gh/ascopes/java-compiler-testing)
@@ -85,6 +86,12 @@ dependencies {
 }
 ```
 
+For Java 11 support, you should use the v4.x version of this library. If you
+only need to build on Java 17 or newer, you should use the v5.x version of this
+library. This does not affect the versions of Java you can write tests to cross
+compile against, but affects the versions of various dependencies and the
+bytecode version of this library itself.
+
 ## JPMS
 
 If your tests make use of JPMS (i.e. they have a `module-info.java` somewhere), then you will want
@@ -229,8 +236,9 @@ support, running the Lombok annotation processor over the input. This assumes th
 JAR is already on the classpath for the JUnit test runner (e.g. is a test dependency in your
 project).
 
-You will want to make sure you do not attempt to target anything older than Java 9 in this case, since
-module support was only introduced in Java 9.
+> [!IMPORTANT]
+> You will want to make sure you do not attempt to target anything older than Java 9 in this case, since
+> module support was only introduced in Java 9.
 
 ```java
 
@@ -330,9 +338,7 @@ holding the flags you wish to use.
    `-XX:+TieredCompilation -XX:TieredStopAtLevel=1` to set this up. Enabling this in the JCT
    builds reduced the overall build time by around 20 seconds.
 2. Use the ZGC - the ZGC will reduce lag when performing garbage collection on code that
-   has a high churn of objects. On Java 11, the ZGC is an experimental feature, which needs
-   to be enabled with `-XX:+UnlockExperimentalOptions -XX:+UseZGC`. On Java 17, you just
-   need to pass `-XX:+UseZGC` alone.
+   has a high churn of objects. You just need to pass `-XX:+UseZGC` alone.
 
 ## Third-party compiler support
 
diff --git a/SECURITY.md b/SECURITY.md
index 042e36811..325c23abd 100644
--- a/SECURITY.md
+++ b/SECURITY.md
@@ -7,8 +7,9 @@ significant impact. However, should an issue be identified, I
 will strive to fix these issues as soon as possible.
 
 Fixes will be released as a new version, built from the most
-recent `main` branch. Unless expressly requested, no attempt
-to backport changes will be made.
+recent `main` branch for Java 17, and from the v4 branch for
+Java 11 backwards compatibility. Unless expressly requested,
+no attempt to backport changes will be made.
 
 Given this library is designed for use in test packs, the main
 design assumption is that the software is being used by a
diff --git a/java-compiler-testing/pom.xml b/java-compiler-testing/pom.xml
index 9188b00c9..dd4a438a3 100644
--- a/java-compiler-testing/pom.xml
+++ b/java-compiler-testing/pom.xml
@@ -22,7 +22,7 @@
   <parent>
     <groupId>io.github.ascopes.jct</groupId>
     <artifactId>java-compiler-testing-parent</artifactId>
-    <version>4.0.3</version>
+    <version>4.1.2-SNAPSHOT</version>
     <relativePath>../pom.xml</relativePath>
   </parent>
 
diff --git a/java-compiler-testing/src/main/java/io/github/ascopes/jct/junit/AbstractCompilersProvider.java b/java-compiler-testing/src/main/java/io/github/ascopes/jct/junit/AbstractCompilersProvider.java
index b9df70e34..0c25c32e1 100644
--- a/java-compiler-testing/src/main/java/io/github/ascopes/jct/junit/AbstractCompilersProvider.java
+++ b/java-compiler-testing/src/main/java/io/github/ascopes/jct/junit/AbstractCompilersProvider.java
@@ -27,6 +27,7 @@
 import java.lang.reflect.InvocationTargetException;
 import java.util.stream.IntStream;
 import java.util.stream.Stream;
+import org.jspecify.annotations.Nullable;
 import org.junit.jupiter.api.extension.ExtensionContext;
 import org.junit.jupiter.params.provider.Arguments;
 import org.junit.jupiter.params.provider.ArgumentsProvider;
@@ -151,6 +152,7 @@ protected AbstractCompilersProvider() {
   }
 
   @Override
+  @SuppressWarnings("deprecation")
   public Stream<? extends Arguments> provideArguments(ExtensionContext context) {
     return IntStream
         .rangeClosed(minVersion, maxVersion)
@@ -159,6 +161,18 @@ public Stream<? extends Arguments> provideArguments(ExtensionContext context) {
         .map(Arguments::of);
   }
 
+  // Do not @Override as this does not exist prior to JUnit 5.13.
+  // Use a generic Object for the ParameterDeclarations argument as that
+  // also does not exist prior to JUnit 5.13, and we do not want to trigger
+  // NoClassDefFoundExceptions on older versions of JUnit.
+  @SuppressWarnings("override")
+  public Stream<? extends Arguments> provideArguments(
+      @Nullable Object parameters,
+      ExtensionContext context
+  ) {
+    return provideArguments(context);
+  }
+
   /**
    * Configure this provider with parameters from annotations.
    *
diff --git a/pom.xml b/pom.xml
index ac938b9fa..abb7ebffc 100644
--- a/pom.xml
+++ b/pom.xml
@@ -21,7 +21,7 @@
 
   <groupId>io.github.ascopes.jct</groupId>
   <artifactId>java-compiler-testing-parent</artifactId>
-  <version>4.0.3</version>
+  <version>4.1.2-SNAPSHOT</version>
   <packaging>pom</packaging>
 
   <name>Java Compiler Testing parent project</name>
@@ -57,15 +57,10 @@
 
   <distributionManagement>
     <repository>
-      <id>ossrh</id>
-      <name>Maven Central Releases</name>
-      <url>https://s01.oss.sonatype.org/service/local/staging/deploy/maven2/</url>
+      <id>central</id>
+      <name>Maven Central</name>
+      <url>https://central.sonatype.com</url>
     </repository>
-    <snapshotRepository>
-      <id>ossrh</id>
-      <name>Maven Central Snapshots</name>
-      <url>https://s01.oss.sonatype.org/content/repositories/snapshots</url>
-    </snapshotRepository>
   </distributionManagement>
 
   <issueManagement>
@@ -89,41 +84,41 @@
     <url>https://github.com/ascopes/java-compiler-testing</url>
     <connection>scm:git:https://github.com/ascopes/java-compiler-testing</connection>
     <developerConnection>scm:git:https://github.com/ascopes/java-compiler-testing</developerConnection>
-    <tag>v4.0.3</tag>
+    <tag>vHEAD</tag>
   </scm>
 
   <properties>
     <!-- Dependencies -->
-    <assertj.version>3.27.2</assertj.version>
-    <awaitility.version>4.2.2</awaitility.version>
+    <assertj.version>3.27.3</assertj.version>
+    <awaitility.version>4.3.0</awaitility.version>
     <fuzzywuzzy.version>1.4.0</fuzzywuzzy.version>
     <jspecify.version>1.0.0</jspecify.version>
-    <junit.version>5.11.4</junit.version>
+    <junit.version>5.13.1</junit.version>
     <memoryfilesystem.version>2.8.1</memoryfilesystem.version>
-    <mockito.version>5.15.2</mockito.version>
-    <slf4j.version>2.0.16</slf4j.version>
+    <mockito.version>5.18.0</mockito.version>
+    <slf4j.version>2.0.17</slf4j.version>
 
     <!-- Plugins -->
-    <jacoco-maven-plugin.version>0.8.12</jacoco-maven-plugin.version>
-    <license-maven-plugin.version>4.6</license-maven-plugin.version>
+    <central-publishing-maven-plugin.version>0.7.0</central-publishing-maven-plugin.version>
+    <jacoco-maven-plugin.version>0.8.13</jacoco-maven-plugin.version>
+    <license-maven-plugin.version>5.0.0</license-maven-plugin.version>
     <maven-checkstyle-plugin.version>3.6.0</maven-checkstyle-plugin.version>
-    <maven-compiler-plugin.version>3.13.0</maven-compiler-plugin.version>
-    <maven-deploy-plugin.version>3.1.3</maven-deploy-plugin.version>
-    <maven-failsafe-plugin.version>3.5.2</maven-failsafe-plugin.version>
+    <maven-compiler-plugin.version>3.14.0</maven-compiler-plugin.version>
+    <maven-deploy-plugin.version>3.1.4</maven-deploy-plugin.version>
+    <maven-failsafe-plugin.version>3.5.3</maven-failsafe-plugin.version>
     <maven-gpg-plugin.version>3.2.1</maven-gpg-plugin.version>
-    <maven-install-plugin.version>3.1.3</maven-install-plugin.version>
+    <maven-install-plugin.version>3.1.4</maven-install-plugin.version>
     <maven-jar-plugin.version>3.4.2</maven-jar-plugin.version>
     <maven-javadoc-plugin.version>3.11.2</maven-javadoc-plugin.version>
     <maven-invoker-plugin.version>3.9.0</maven-invoker-plugin.version>
     <maven-release-plugin.version>3.0.0-M7</maven-release-plugin.version>
     <maven-resources-plugin.version>3.3.1</maven-resources-plugin.version>
     <maven-source-plugin.version>3.3.1</maven-source-plugin.version>
-    <maven-surefire-plugin.version>3.5.2</maven-surefire-plugin.version>
+    <maven-surefire-plugin.version>3.5.3</maven-surefire-plugin.version>
 
     <!-- Plugin dependencies -->
-    <checkstyle.version>10.21.1</checkstyle.version>
+    <checkstyle.version>10.25.0</checkstyle.version>
     <maven-surefire-junit5-tree-reporter.version>1.4.0</maven-surefire-junit5-tree-reporter.version>
-
     <!-- Log verbosity -->
     <hide-test-logs-in-console>true</hide-test-logs-in-console>
 
@@ -164,7 +159,7 @@
 
     <!-- JavaDocs -->
     <current-year>2025</current-year>
-    <newest-java-version>23</newest-java-version>
+    <newest-java-version>24</newest-java-version>
     <highlight-js.version>11.9.0</highlight-js.version>
 
     <!-- Other configuration -->
@@ -412,8 +407,7 @@
               <link>https://javadoc.io/doc/org.assertj/assertj-core/${assertj.version}</link>
               <link>https://javadoc.io/doc/org.jspecify/jspecify/${jspecify.version}</link>
               <link>https://javadoc.io/doc/org.slf4j/slf4j-api/${slf4j.version}</link>
-              <link>https://javadoc.io/doc/org.junit.jupiter/junit-jupiter-api/${junit.version}</link>
-              <link>https://javadoc.io/doc/org.junit.jupiter/junit-jupiter-params/${junit.version}</link>
+              <link>https://junit.org/junit5/docs/${junit.version}/api</link>
             </links>
             <quiet>true</quiet>
             <release>${java-release}</release>
@@ -676,6 +670,24 @@
           </dependency>
         </dependencies>
       </plugin>
+
+      <plugin>
+        <!--
+            Intercepts the default deploy phase and replaces it with goals that
+            handle pushing to Sonatype Nexus (Maven Central's registry backend)
+            and then triggering a "closure" operation that will promote it to
+            the public Maven repository.
+        -->
+        <groupId>org.sonatype.central</groupId>
+        <artifactId>central-publishing-maven-plugin</artifactId>
+        <version>${central-publishing-maven-plugin.version}</version>
+        <extensions>true</extensions>
+        <configuration>
+          <autoPublish>true</autoPublish>
+          <publishingServerId>central</publishingServerId>
+          <waitUntil>published</waitUntil>
+        </configuration>
+      </plugin>
     </plugins>
   </build>