diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index dc38798c8..c07aefa5c 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -23,9 +23,12 @@ jobs:
           # 10.x 
           - SONAR_SERVER_VERSION: 10.7.0.96327
             SONAR_SERVER_JAVA_VERSION: 17
-          # 25.x 
-          - SONAR_SERVER_VERSION: 25.10.0.114319
+          # 25.x
+          - SONAR_SERVER_VERSION: 25.12.0.117093
             SONAR_SERVER_JAVA_VERSION: 17
+          # 26.x
+          - SONAR_SERVER_VERSION: 26.1.0.118079
+            SONAR_SERVER_JAVA_VERSION: 21
           # https://mvnrepository.com/artifact/org.sonarsource.sonarqube/sonar-core
     steps:
       - uses: actions/checkout@v6
diff --git a/src/test/resources/projects/findbugs/pom.xml b/src/test/resources/projects/findbugs/pom.xml
index cc047058c..2f746a9c7 100644
--- a/src/test/resources/projects/findbugs/pom.xml
+++ b/src/test/resources/projects/findbugs/pom.xml
@@ -13,8 +13,8 @@
 				<artifactId>maven-compiler-plugin</artifactId>
 				<version>3.8.1</version>
 				<configuration>
-					<source>7</source>
-					<target>7</target>
+					<source>8</source>
+					<target>8</target>
 				</configuration>
 			</plugin>
 		</plugins>
diff --git a/src/test/resources/projects/jspc-jetty/pom.xml b/src/test/resources/projects/jspc-jetty/pom.xml
index f22d8d426..36ec79587 100644
--- a/src/test/resources/projects/jspc-jetty/pom.xml
+++ b/src/test/resources/projects/jspc-jetty/pom.xml
@@ -18,8 +18,8 @@
 				<artifactId>maven-compiler-plugin</artifactId>
 				<version>3.8.1</version>
 				<configuration>
-					<source>7</source>
-					<target>7</target>
+					<source>8</source>
+					<target>8</target>
 				</configuration>
 			</plugin>
 
@@ -79,4 +79,4 @@
 			<version>1.2</version>
 		</dependency>
 	</dependencies>
-</project>
+</project>
diff --git a/src/test/resources/projects/jspc-sling/pom.xml b/src/test/resources/projects/jspc-sling/pom.xml
index 29498691a..dbfb13789 100644
--- a/src/test/resources/projects/jspc-sling/pom.xml
+++ b/src/test/resources/projects/jspc-sling/pom.xml
@@ -18,8 +18,8 @@
 				<artifactId>maven-compiler-plugin</artifactId>
 				<version>3.8.1</version>
 				<configuration>
-					<source>7</source>
-					<target>7</target>
+					<source>8</source>
+					<target>8</target>
 				</configuration>
 			</plugin>
 
@@ -65,4 +65,4 @@
 			<scope>provided</scope>
 		</dependency>
 	</dependencies>
-</project>
+</project>
diff --git a/src/test/resources/projects/multi-module/build.gradle b/src/test/resources/projects/multi-module/build.gradle
index e84b321cf..4f242e4c0 100644
--- a/src/test/resources/projects/multi-module/build.gradle
+++ b/src/test/resources/projects/multi-module/build.gradle
@@ -1,6 +1,6 @@
 plugins {
     id "java-library"
-    id "org.sonarqube" version "3.3"
+    id "org.sonarqube" version "4.0.0.2929"
 }
 
 allprojects {
@@ -32,4 +32,4 @@ allprojects {
 	repositories {
     	mavenCentral()
     }
-}
+}
diff --git a/src/test/resources/projects/multi-module/gradle/wrapper/gradle-wrapper.properties b/src/test/resources/projects/multi-module/gradle/wrapper/gradle-wrapper.properties
index ffed3a254..a59520664 100644
--- a/src/test/resources/projects/multi-module/gradle/wrapper/gradle-wrapper.properties
+++ b/src/test/resources/projects/multi-module/gradle/wrapper/gradle-wrapper.properties
@@ -1,5 +1,5 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-7.2-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.5-bin.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
diff --git a/src/test/resources/projects/multi-module/multi-module-app/build.gradle b/src/test/resources/projects/multi-module/multi-module-app/build.gradle
index b69502fcf..9fcdb3f84 100644
--- a/src/test/resources/projects/multi-module/multi-module-app/build.gradle
+++ b/src/test/resources/projects/multi-module/multi-module-app/build.gradle
@@ -1,4 +1,9 @@
 dependencies {
     implementation project(':multi-module-core')
     implementation project(':multi-module-fx')
-}
+}
+
+java {
+    sourceCompatibility = JavaVersion.VERSION_1_8
+    targetCompatibility = JavaVersion.VERSION_1_8
+}
diff --git a/src/test/resources/projects/multi-module/multi-module-app/pom.xml b/src/test/resources/projects/multi-module/multi-module-app/pom.xml
index 0d020afd0..c796f402e 100644
--- a/src/test/resources/projects/multi-module/multi-module-app/pom.xml
+++ b/src/test/resources/projects/multi-module/multi-module-app/pom.xml
@@ -19,8 +19,8 @@
 				<artifactId>maven-compiler-plugin</artifactId>
 				<version>3.8.1</version>
 				<configuration>
-					<source>7</source>
-					<target>7</target>
+					<source>8</source>
+					<target>8</target>
 				</configuration>
 			</plugin>
 		</plugins>
@@ -38,4 +38,4 @@
 			<version>0.0.1-SNAPSHOT</version>
 		</dependency>
 	</dependencies>
-</project>
+</project>
diff --git a/src/test/resources/projects/multi-module/multi-module-clojure/build.gradle b/src/test/resources/projects/multi-module/multi-module-clojure/build.gradle
index b38d0ef8a..71b85c741 100644
--- a/src/test/resources/projects/multi-module/multi-module-clojure/build.gradle
+++ b/src/test/resources/projects/multi-module/multi-module-clojure/build.gradle
@@ -4,4 +4,9 @@ plugins {
 
 dependencies {
     implementation 'com.google.code.findbugs:jsr305:3.0.2'
-}
+}
+
+java {
+    sourceCompatibility = JavaVersion.VERSION_1_8
+    targetCompatibility = JavaVersion.VERSION_1_8
+}
diff --git a/src/test/resources/projects/multi-module/multi-module-core/build.gradle b/src/test/resources/projects/multi-module/multi-module-core/build.gradle
index 2101f01e6..4722120de 100644
--- a/src/test/resources/projects/multi-module/multi-module-core/build.gradle
+++ b/src/test/resources/projects/multi-module/multi-module-core/build.gradle
@@ -5,6 +5,11 @@ dependencies {
     testRuntimeOnly 'org.junit.jupiter:junit-jupiter-engine:5.8.2'
 }
 
+java {
+    sourceCompatibility = JavaVersion.VERSION_1_8
+    targetCompatibility = JavaVersion.VERSION_1_8
+}
+
 test {
     useJUnitPlatform()
-}
+}
diff --git a/src/test/resources/projects/multi-module/multi-module-core/pom.xml b/src/test/resources/projects/multi-module/multi-module-core/pom.xml
index 932529b51..996b75c51 100644
--- a/src/test/resources/projects/multi-module/multi-module-core/pom.xml
+++ b/src/test/resources/projects/multi-module/multi-module-core/pom.xml
@@ -19,8 +19,8 @@
 				<artifactId>maven-compiler-plugin</artifactId>
 				<version>3.8.1</version>
 				<configuration>
-					<source>7</source>
-					<target>7</target>
+					<source>8</source>
+					<target>8</target>
 				</configuration>
 			</plugin>
 		</plugins>
@@ -40,4 +40,4 @@
 			<scope>test</scope>
 		</dependency>
 	</dependencies>
-</project>
+</project>
diff --git a/src/test/resources/projects/multi-module/multi-module-fx/build.gradle b/src/test/resources/projects/multi-module/multi-module-fx/build.gradle
index f2f9f95db..89cec0631 100644
--- a/src/test/resources/projects/multi-module/multi-module-fx/build.gradle
+++ b/src/test/resources/projects/multi-module/multi-module-fx/build.gradle
@@ -1,3 +1,8 @@
 dependencies {
     implementation project(':multi-module-core')
-}
+}
+
+java {
+    sourceCompatibility = JavaVersion.VERSION_1_8
+    targetCompatibility = JavaVersion.VERSION_1_8
+}
diff --git a/src/test/resources/projects/multi-module/multi-module-fx/pom.xml b/src/test/resources/projects/multi-module/multi-module-fx/pom.xml
index d2469efb8..0c8cbed6d 100644
--- a/src/test/resources/projects/multi-module/multi-module-fx/pom.xml
+++ b/src/test/resources/projects/multi-module/multi-module-fx/pom.xml
@@ -19,8 +19,8 @@
 				<artifactId>maven-compiler-plugin</artifactId>
 				<version>3.8.1</version>
 				<configuration>
-					<source>7</source>
-					<target>7</target>
+					<source>8</source>
+					<target>8</target>
 				</configuration>
 			</plugin>
 		</plugins>
@@ -40,4 +40,4 @@
 			<version>4.13.1</version>
 		</dependency>
 	</dependencies>
-</project>
+</project>
diff --git a/src/test/resources/projects/multi-module/multi-module-groovy/build.gradle b/src/test/resources/projects/multi-module/multi-module-groovy/build.gradle
index e975f215a..c0ed6bd47 100644
--- a/src/test/resources/projects/multi-module/multi-module-groovy/build.gradle
+++ b/src/test/resources/projects/multi-module/multi-module-groovy/build.gradle
@@ -5,4 +5,9 @@ plugins {
 dependencies {
     implementation 'org.codehaus.groovy:groovy-all:2.4.15'
     implementation project(':multi-module-core')
-}
+}
+
+java {
+    sourceCompatibility = JavaVersion.VERSION_1_8
+    targetCompatibility = JavaVersion.VERSION_1_8
+}
diff --git a/src/test/resources/projects/multi-module/multi-module-jsp-uncompiled/build.gradle b/src/test/resources/projects/multi-module/multi-module-jsp-uncompiled/build.gradle
index 9d35a0630..723631a23 100644
--- a/src/test/resources/projects/multi-module/multi-module-jsp-uncompiled/build.gradle
+++ b/src/test/resources/projects/multi-module/multi-module-jsp-uncompiled/build.gradle
@@ -6,6 +6,11 @@ dependencies {
     implementation project(':multi-module-core')
 }
 
+java {
+    sourceCompatibility = JavaVersion.VERSION_1_8
+    targetCompatibility = JavaVersion.VERSION_1_8
+}
+
 sonarqube {
     properties {
         property 'sonar.sources', 'src/main/webapp'
diff --git a/src/test/resources/projects/multi-module/multi-module-jsp-uncompiled/pom.xml b/src/test/resources/projects/multi-module/multi-module-jsp-uncompiled/pom.xml
index 5b1837401..2388512cc 100644
--- a/src/test/resources/projects/multi-module/multi-module-jsp-uncompiled/pom.xml
+++ b/src/test/resources/projects/multi-module/multi-module-jsp-uncompiled/pom.xml
@@ -20,8 +20,8 @@
 				<artifactId>maven-compiler-plugin</artifactId>
 				<version>3.8.1</version>
 				<configuration>
-					<source>7</source>
-					<target>7</target>
+					<source>8</source>
+					<target>8</target>
 				</configuration>
 			</plugin>
 
diff --git a/src/test/resources/projects/multi-module/multi-module-kotlin/build.gradle b/src/test/resources/projects/multi-module/multi-module-kotlin/build.gradle
index b38d0ef8a..42517bc92 100644
--- a/src/test/resources/projects/multi-module/multi-module-kotlin/build.gradle
+++ b/src/test/resources/projects/multi-module/multi-module-kotlin/build.gradle
@@ -4,4 +4,13 @@ plugins {
 
 dependencies {
     implementation 'com.google.code.findbugs:jsr305:3.0.2'
-}
+}
+
+java {
+    sourceCompatibility = JavaVersion.VERSION_11
+    targetCompatibility = JavaVersion.VERSION_11
+}
+
+tasks.withType(org.jetbrains.kotlin.gradle.tasks.KotlinCompile).configureEach {
+    kotlinOptions.jvmTarget = "11"
+}
diff --git a/src/test/resources/projects/multi-module/multi-module-scala/build.gradle b/src/test/resources/projects/multi-module/multi-module-scala/build.gradle
index 2321da278..d483c44f7 100644
--- a/src/test/resources/projects/multi-module/multi-module-scala/build.gradle
+++ b/src/test/resources/projects/multi-module/multi-module-scala/build.gradle
@@ -3,6 +3,6 @@ plugins {
 }
 
 dependencies {
-    implementation 'org.scala-lang:scala3-library_3:3.0.1'
+    implementation 'org.scala-lang:scala3-library_3:3.4.0'
     implementation project(':multi-module-core')
-}
+}
diff --git a/src/test/resources/projects/multi-module/multi-module-scala/pom.xml b/src/test/resources/projects/multi-module/multi-module-scala/pom.xml
index 23b9b75de..d894014d3 100644
--- a/src/test/resources/projects/multi-module/multi-module-scala/pom.xml
+++ b/src/test/resources/projects/multi-module/multi-module-scala/pom.xml
@@ -49,7 +49,7 @@
 		<dependency>
 			<groupId>org.scala-lang</groupId>
 			<artifactId>scala3-library_3</artifactId>
-			<version>3.1.2</version>
+			<version>3.4.0</version>
 		</dependency>
 	</dependencies>
-</project>
+</project>
diff --git a/src/test/resources/projects/multiple-directories-with-classes/dir1/pom.xml b/src/test/resources/projects/multiple-directories-with-classes/dir1/pom.xml
index b50c756fd..b1dc44df0 100644
--- a/src/test/resources/projects/multiple-directories-with-classes/dir1/pom.xml
+++ b/src/test/resources/projects/multiple-directories-with-classes/dir1/pom.xml
@@ -14,8 +14,8 @@
 				<artifactId>maven-compiler-plugin</artifactId>
 				<version>3.8.1</version>
 				<configuration>
-					<source>7</source>
-					<target>7</target>
+					<source>8</source>
+					<target>8</target>
 				</configuration>
 			</plugin>
 		</plugins>
diff --git a/src/test/resources/projects/multiple-directories-with-classes/dir2/pom.xml b/src/test/resources/projects/multiple-directories-with-classes/dir2/pom.xml
index faa2cfa17..c01d88301 100644
--- a/src/test/resources/projects/multiple-directories-with-classes/dir2/pom.xml
+++ b/src/test/resources/projects/multiple-directories-with-classes/dir2/pom.xml
@@ -14,8 +14,8 @@
 				<artifactId>maven-compiler-plugin</artifactId>
 				<version>3.8.1</version>
 				<configuration>
-					<source>7</source>
-					<target>7</target>
+					<source>8</source>
+					<target>8</target>
 				</configuration>
 			</plugin>
 		</plugins>
diff --git a/src/test/resources/projects/scala/pom.xml b/src/test/resources/projects/scala/pom.xml
index 912c5a0fb..f051a4747 100644
--- a/src/test/resources/projects/scala/pom.xml
+++ b/src/test/resources/projects/scala/pom.xml
@@ -6,7 +6,7 @@
 
 	<properties>
 		<encoding>UTF-8</encoding>
-		<scala.version>2.13.10</scala.version>
+		<scala.version>2.13.18</scala.version>
 	</properties>
 
 	<dependencies>
@@ -34,4 +34,4 @@
 			</plugin>
 		</plugins>
 	</build>
-</project>
+</project>
diff --git a/src/test/resources/projects/simple/pom.xml b/src/test/resources/projects/simple/pom.xml
index a19a5437c..3b876d79d 100644
--- a/src/test/resources/projects/simple/pom.xml
+++ b/src/test/resources/projects/simple/pom.xml
@@ -14,8 +14,8 @@
         <artifactId>maven-compiler-plugin</artifactId>
         <version>3.8.1</version>
         <configuration>
-          <source>7</source>
-          <target>7</target>
+          <source>8</source>
+          <target>8</target>
         </configuration>
       </plugin>
     </plugins>