Update `actions/setup-java` to v2.
diff --git a/.github/workflows/maven.yml b/.github/workflows/maven.yml
index 0609fbc..4333a64 100644
--- a/.github/workflows/maven.yml
+++ b/.github/workflows/maven.yml
@@ -39,8 +39,9 @@
         restore-keys: |
           ${{ runner.os }}-maven-
     - name: Set up JDK ${{ matrix.java }}
-      uses: actions/setup-java@v1.4.3
+      uses: actions/setup-java@v2
       with:
+        distribution: 'adopt'
         java-version: ${{ matrix.java }}
     - name: Build with Maven
       run: mvn -V --no-transfer-progress -D doclint=none --file pom.xml
diff --git a/src/changes/changes.xml b/src/changes/changes.xml
index 9661be8..ff9ff4f 100644
--- a/src/changes/changes.xml
+++ b/src/changes/changes.xml
@@ -52,10 +52,10 @@
       </action>
       <!-- UPDATES -->
       <action dev="ggregory" type="update" due-to="Dependabot">
-        Bump actions/checkout from v2.3.1 to v2.3.4 (#24).
+        Bump actions/checkout from v2.3.1 to v2.3.4, #24.
       </action>
-      <action dev="ggregory" type="update" due-to="Dependabot">
-        Bump actions/setup-java from v1.4.0 to v1.4.3 (#21).
+      <action dev="ggregory" type="update" due-to="Dependabot, Gary Gregory">
+        Bump actions/setup-java from v1.4.0 to v2, #21.
       </action>
       <action dev="ggregory" type="update" due-to="xiaozhiliaoo">
         Add more entries to .gitignore file #25.