diff --git a/pom.xml b/pom.xml
index 1275ce115..3b7ad3568 100644
--- a/pom.xml
+++ b/pom.xml
@@ -52,7 +52,7 @@
         <jaxb-api.version>2.3.1</jaxb-api.version>
         <jaxb-impl.version>2.3.2</jaxb-impl.version>
         <annotation-api.version>1.3.2</annotation-api.version>
-        <system-rules.version>1.19.0</system-rules.version>
+        <system-lambda.version>1.1.0</system-lambda.version>
         <urm.version>2.0.0</urm.version>
         <mockito-junit-jupiter.version>3.5.0</mockito-junit-jupiter.version>
         <!-- SonarCloud -->
@@ -338,8 +338,8 @@
             </dependency>
             <dependency>
                 <groupId>com.github.stefanbirkner</groupId>
-                <artifactId>system-rules</artifactId>
-                <version>${system-rules.version}</version>
+                <artifactId>system-lambda</artifactId>
+                <version>${system-lambda.version}</version>
                 <scope>test</scope>
             </dependency>
         </dependencies>
diff --git a/subclass-sandbox/pom.xml b/subclass-sandbox/pom.xml
index ac718291e..a912ada3f 100644
--- a/subclass-sandbox/pom.xml
+++ b/subclass-sandbox/pom.xml
@@ -42,7 +42,7 @@
         </dependency>
         <dependency>
             <groupId>com.github.stefanbirkner</groupId>
-            <artifactId>system-rules</artifactId>
+            <artifactId>system-lambda</artifactId>
         </dependency>
         <dependency>
             <groupId>org.junit.jupiter</groupId>
diff --git a/subclass-sandbox/src/test/java/com/iluwatar/subclasssandbox/GroundDiveTest.java b/subclass-sandbox/src/test/java/com/iluwatar/subclasssandbox/GroundDiveTest.java
index 97e2ac67d..3b379946c 100644
--- a/subclass-sandbox/src/test/java/com/iluwatar/subclasssandbox/GroundDiveTest.java
+++ b/subclass-sandbox/src/test/java/com/iluwatar/subclasssandbox/GroundDiveTest.java
@@ -23,55 +23,48 @@
 
 package com.iluwatar.subclasssandbox;
 
+import com.github.stefanbirkner.systemlambda.Statement;
 import org.junit.Assert;
-import org.junit.Rule;
 import org.junit.Test;
-import org.junit.contrib.java.lang.system.SystemOutRule;
+
+import static com.github.stefanbirkner.systemlambda.SystemLambda.tapSystemOutNormalized;
 
 /**
  * GroundDive unit tests.
  */
 public class GroundDiveTest {
 
-  @Rule
-  public SystemOutRule log = new SystemOutRule().enableLog();
-
   @Test
-  public void testMove() {
-    log.clearLog();
+  public void testMove() throws Exception {
     var groundDive = new GroundDive();
     groundDive.move(1.0, 1.0, 1.0);
-    var outputLog = getLogContent(log.getLog());
+    var outputLog = getLogContent(() -> groundDive.move(1.0, 1.0, 1.0));
     var expectedLog = "Move to ( 1.0, 1.0, 1.0 )";
     Assert.assertEquals(outputLog, expectedLog);
   }
 
   @Test
-  public void testPlaySound() {
-    log.clearLog();
+  public void testPlaySound() throws Exception {
     var groundDive = new GroundDive();
-    groundDive.playSound("SOUND_NAME", 1);
-    var outputLog = getLogContent(log.getLog());
+    var outputLog = getLogContent(() -> groundDive.playSound("SOUND_NAME", 1));
     var expectedLog = "Play SOUND_NAME with volumn 1";
     Assert.assertEquals(outputLog, expectedLog);
   }
 
   @Test
-  public void testSpawnParticles() {
-    log.clearLog();
+  public void testSpawnParticles() throws Exception {
     var groundDive = new GroundDive();
-    groundDive.spawnParticles("PARTICLE_TYPE", 100);
-    final var outputLog = getLogContent(log.getLog());
+    final var outputLog = getLogContent(
+            () -> groundDive.spawnParticles("PARTICLE_TYPE", 100));
     final var expectedLog = "Spawn 100 particle with type PARTICLE_TYPE";
     Assert.assertEquals(outputLog, expectedLog);
   }
 
   @Test
-  public void testActivate() {
-    log.clearLog();
+  public void testActivate() throws Exception {
     var groundDive = new GroundDive();
-    groundDive.activate();
-    var logs = log.getLog().split("\n");
+    var logs = tapSystemOutNormalized(groundDive::activate)
+            .split("\n");
     final var expectedSize = 3;
     final var log1 = logs[0].split("-")[1].trim() + " -" + logs[0].split("-")[2].trim();
     final var expectedLog1 = "Move to ( 0.0, 0.0, -20.0 )";
@@ -85,6 +78,11 @@ public class GroundDiveTest {
     Assert.assertEquals(log3, expectedLog3);
   }
 
+  private String getLogContent(Statement statement) throws Exception {
+    var log = tapSystemOutNormalized(statement);
+    return getLogContent(log);
+  }
+
   private String getLogContent(String log) {
     return log.split("-")[1].trim();
   }
diff --git a/subclass-sandbox/src/test/java/com/iluwatar/subclasssandbox/SkyLaunchTest.java b/subclass-sandbox/src/test/java/com/iluwatar/subclasssandbox/SkyLaunchTest.java
index e192737f6..d285e6c7d 100644
--- a/subclass-sandbox/src/test/java/com/iluwatar/subclasssandbox/SkyLaunchTest.java
+++ b/subclass-sandbox/src/test/java/com/iluwatar/subclasssandbox/SkyLaunchTest.java
@@ -23,55 +23,47 @@
 
 package com.iluwatar.subclasssandbox;
 
+import com.github.stefanbirkner.systemlambda.Statement;
 import org.junit.Assert;
-import org.junit.Rule;
 import org.junit.Test;
-import org.junit.contrib.java.lang.system.SystemOutRule;
+
+import static com.github.stefanbirkner.systemlambda.SystemLambda.tapSystemOutNormalized;
 
 /**
  * SkyLaunch unit tests.
  */
 public class SkyLaunchTest {
 
-  @Rule
-  public SystemOutRule log = new SystemOutRule().enableLog();
-
   @Test
-  public void testMove() {
-    log.clearLog();
+  public void testMove() throws Exception {
     var skyLaunch = new SkyLaunch();
-    skyLaunch.move(1.0, 1.0, 1.0);
-    var outputLog = getLogContent(log.getLog());
+    var outputLog = getLogContent(() -> skyLaunch.move(1.0, 1.0, 1.0));
     var expectedLog = "Move to ( 1.0, 1.0, 1.0 )";
     Assert.assertEquals(outputLog, expectedLog);
   }
 
   @Test
-  public void testPlaySound() {
-    log.clearLog();
+  public void testPlaySound() throws Exception {
     var skyLaunch = new SkyLaunch();
-    skyLaunch.playSound("SOUND_NAME", 1);
-    var outputLog = getLogContent(log.getLog());
+    var outputLog = getLogContent(() -> skyLaunch.playSound("SOUND_NAME", 1));
     var expectedLog = "Play SOUND_NAME with volumn 1";
     Assert.assertEquals(outputLog, expectedLog);
   }
 
   @Test
-  public void testSpawnParticles() {
-    log.clearLog();
+  public void testSpawnParticles() throws Exception {
     var skyLaunch = new SkyLaunch();
-    skyLaunch.spawnParticles("PARTICLE_TYPE", 100);
-    var outputLog = getLogContent(log.getLog());
+    var outputLog = getLogContent(
+            () -> skyLaunch.spawnParticles("PARTICLE_TYPE", 100));
     var expectedLog = "Spawn 100 particle with type PARTICLE_TYPE";
     Assert.assertEquals(outputLog, expectedLog);
   }
 
   @Test
-  public void testActivate() {
-    log.clearLog();
+  public void testActivate() throws Exception {
     var skyLaunch = new SkyLaunch();
-    skyLaunch.activate();
-    var logs = log.getLog().split("\n");
+    var logs = tapSystemOutNormalized(skyLaunch::activate)
+            .split("\n");
     final var expectedSize = 3;
     final var log1 = getLogContent(logs[0]);
     final var expectedLog1 = "Move to ( 0.0, 0.0, 20.0 )";
@@ -85,6 +77,11 @@ public class SkyLaunchTest {
     Assert.assertEquals(log3, expectedLog3);
   }
 
+  private String getLogContent(Statement statement) throws Exception {
+    var log = tapSystemOutNormalized(statement);
+    return getLogContent(log);
+  }
+
   private String getLogContent(String log) {
     return log.split("-")[1].trim();
   }