diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index a271c59..2b05b43 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -10,21 +10,22 @@ jobs:
     name: Build and analyze
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v6
         with:
           fetch-depth: 0  # Shallow clones should be disabled for a better relevancy of analysis
       - name: Set up JDK 11
-        uses: actions/setup-java@v1
+        uses: actions/setup-java@v5
         with:
+          distribution: 'temurin'
           java-version: 11
       - name: Cache SonarCloud packages
-        uses: actions/cache@v1
+        uses: actions/cache@v5
         with:
           path: ~/.sonar/cache
           key: ${{ runner.os }}-sonar
           restore-keys: ${{ runner.os }}-sonar
       - name: Cache Maven packages
-        uses: actions/cache@v1
+        uses: actions/cache@v5
         with:
           path: ~/.m2
           key: ${{ runner.os }}-m2-${{ hashFiles('**/pom.xml') }}
diff --git a/src/main/java/Main4.java b/src/main/java/Main4.java
index f99425d..e2c1bc4 100644
--- a/src/main/java/Main4.java
+++ b/src/main/java/Main4.java
@@ -1,5 +1,6 @@
 import java.util.regex.Matcher;
 import java.util.regex.Pattern;
+import java.util.regex.PatternSyntaxException;
 
 public class Main4 {
   private static final Pattern EMAIL_PATTERN = Pattern.compile("<(\\S*?)>");