diff --git a/backend/pom.xml b/backend/pom.xml
index f4161be56e..60ec0fdbc7 100644
--- a/backend/pom.xml
+++ b/backend/pom.xml
@@ -82,8 +82,18 @@
             <artifactId>log4j-slf4j-impl</artifactId>
         </dependency>
         <dependency>
-            <groupId>junit</groupId>
-            <artifactId>junit</artifactId>
+            <groupId>org.junit.platform</groupId>
+            <artifactId>junit-platform-launcher</artifactId>
+            <scope>test</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.junit.jupiter</groupId>
+            <artifactId>junit-jupiter-engine</artifactId>
+            <scope>test</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.junit.vintage</groupId>
+            <artifactId>junit-vintage-engine</artifactId>
             <scope>test</scope>
         </dependency>
         <dependency>
diff --git a/clients/client/pom.xml b/clients/client/pom.xml
index 2d739ff62c..317bcda314 100644
--- a/clients/client/pom.xml
+++ b/clients/client/pom.xml
@@ -63,8 +63,18 @@
             <scope>test</scope>
         </dependency>
         <dependency>
-            <groupId>junit</groupId>
-            <artifactId>junit</artifactId>
+            <groupId>org.junit.platform</groupId>
+            <artifactId>junit-platform-launcher</artifactId>
+            <scope>test</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.junit.jupiter</groupId>
+            <artifactId>junit-jupiter-engine</artifactId>
+            <scope>test</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.junit.vintage</groupId>
+            <artifactId>junit-vintage-engine</artifactId>
             <scope>test</scope>
         </dependency>
         <dependency>
diff --git a/clients/http-support/pom.xml b/clients/http-support/pom.xml
index ae282adfe7..7627ff5686 100644
--- a/clients/http-support/pom.xml
+++ b/clients/http-support/pom.xml
@@ -49,8 +49,18 @@
         </dependency>
         <!-- Test Dependencies -->
         <dependency>
-            <groupId>junit</groupId>
-            <artifactId>junit</artifactId>
+            <groupId>org.junit.platform</groupId>
+            <artifactId>junit-platform-launcher</artifactId>
+            <scope>test</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.junit.jupiter</groupId>
+            <artifactId>junit-jupiter-engine</artifactId>
+            <scope>test</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.junit.vintage</groupId>
+            <artifactId>junit-vintage-engine</artifactId>
             <scope>test</scope>
         </dependency>
         <dependency>
diff --git a/keycloak/user-storage-provider/pom.xml b/keycloak/user-storage-provider/pom.xml
index 908c680dda..f3c7c7246c 100644
--- a/keycloak/user-storage-provider/pom.xml
+++ b/keycloak/user-storage-provider/pom.xml
@@ -37,13 +37,6 @@
             <groupId>org.jboss.logging</groupId>
             <artifactId>jboss-logging</artifactId>
         </dependency>
-        <dependency>
-            <groupId>org.jboss.arquillian.graphene</groupId>
-            <artifactId>graphene-webdriver</artifactId>
-            <version>${arquillian-graphene.version}</version>
-            <type>pom</type>
-            <scope>test</scope>
-        </dependency>
         <dependency>
             <groupId>jakarta.xml.bind</groupId>
             <artifactId>jakarta.xml.bind-api</artifactId>
diff --git a/libraries/commonIO/pom.xml b/libraries/commonIO/pom.xml
index 029cdea866..72bb13c434 100644
--- a/libraries/commonIO/pom.xml
+++ b/libraries/commonIO/pom.xml
@@ -54,8 +54,19 @@
             <version>${project.version}</version>
         </dependency>
         <dependency>
-            <groupId>junit</groupId>
-            <artifactId>junit</artifactId>
+            <groupId>org.junit.platform</groupId>
+            <artifactId>junit-platform-launcher</artifactId>
+            <scope>test</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.junit.jupiter</groupId>
+            <artifactId>junit-jupiter-engine</artifactId>
+            <scope>test</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.junit.vintage</groupId>
+            <artifactId>junit-vintage-engine</artifactId>
+            <scope>test</scope>
         </dependency>
         <dependency>
             <groupId>org.hamcrest</groupId>
diff --git a/libraries/datahandler/pom.xml b/libraries/datahandler/pom.xml
index 06131a3c5a..5c06dab36d 100644
--- a/libraries/datahandler/pom.xml
+++ b/libraries/datahandler/pom.xml
@@ -231,8 +231,19 @@
             <artifactId>hamcrest-all</artifactId>
         </dependency>
         <dependency>
-            <groupId>junit</groupId>
-            <artifactId>junit</artifactId>
+            <groupId>org.junit.platform</groupId>
+            <artifactId>junit-platform-launcher</artifactId>
+            <scope>test</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.junit.jupiter</groupId>
+            <artifactId>junit-jupiter-engine</artifactId>
+            <scope>test</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.junit.vintage</groupId>
+            <artifactId>junit-vintage-engine</artifactId>
+            <scope>test</scope>
         </dependency>
         <dependency>
             <groupId>org.mockito</groupId>
diff --git a/libraries/exporters/pom.xml b/libraries/exporters/pom.xml
index 5af79f8378..ada62b399e 100644
--- a/libraries/exporters/pom.xml
+++ b/libraries/exporters/pom.xml
@@ -93,8 +93,19 @@
         </dependency>
 
         <dependency>
-            <groupId>junit</groupId>
-            <artifactId>junit</artifactId>
+            <groupId>org.junit.platform</groupId>
+            <artifactId>junit-platform-launcher</artifactId>
+            <scope>test</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.junit.jupiter</groupId>
+            <artifactId>junit-jupiter-engine</artifactId>
+            <scope>test</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.junit.vintage</groupId>
+            <artifactId>junit-vintage-engine</artifactId>
+            <scope>test</scope>
         </dependency>
         <dependency>
             <groupId>org.hamcrest</groupId>
diff --git a/libraries/importers/pom.xml b/libraries/importers/pom.xml
index c28d6f1bb5..0d31807361 100644
--- a/libraries/importers/pom.xml
+++ b/libraries/importers/pom.xml
@@ -99,8 +99,19 @@
 		</dependency>
 
 		<dependency>
-			<groupId>junit</groupId>
-			<artifactId>junit</artifactId>
+			<groupId>org.junit.platform</groupId>
+			<artifactId>junit-platform-launcher</artifactId>
+			<scope>test</scope>
+		</dependency>
+		<dependency>
+			<groupId>org.junit.jupiter</groupId>
+			<artifactId>junit-jupiter-engine</artifactId>
+			<scope>test</scope>
+		</dependency>
+		<dependency>
+			<groupId>org.junit.vintage</groupId>
+			<artifactId>junit-vintage-engine</artifactId>
+			<scope>test</scope>
 		</dependency>
 		<dependency>
 			<groupId>org.hamcrest</groupId>
diff --git a/libraries/nouveau-handler/pom.xml b/libraries/nouveau-handler/pom.xml
index d180b90720..0aacf06412 100644
--- a/libraries/nouveau-handler/pom.xml
+++ b/libraries/nouveau-handler/pom.xml
@@ -164,8 +164,19 @@
             <artifactId>cloudant</artifactId>
         </dependency>
         <dependency>
-            <groupId>junit</groupId>
-            <artifactId>junit</artifactId>
+            <groupId>org.junit.platform</groupId>
+            <artifactId>junit-platform-launcher</artifactId>
+            <scope>test</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.junit.jupiter</groupId>
+            <artifactId>junit-jupiter-engine</artifactId>
+            <scope>test</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.junit.vintage</groupId>
+            <artifactId>junit-vintage-engine</artifactId>
+            <scope>test</scope>
         </dependency>
         <dependency>
             <groupId>joda-time</groupId>
diff --git a/pom.xml b/pom.xml
index d905b6182a..d835402064 100644
--- a/pom.xml
+++ b/pom.xml
@@ -135,11 +135,12 @@
     <json.version>20250517</json.version>
     <joda-time.version>2.14.0</joda-time.version>
     <junit-dataprovider.version>1.13.1</junit-dataprovider.version>
-    <junit.version>4.13.2</junit.version>
+    <junit.version>5.13.3</junit.version>
+    <junit-platform-launcher.version>1.13.3</junit-platform-launcher.version>
     <log4j2.version>2.25.0</log4j2.version>
     <maven-javadoc.version>3.11.2</maven-javadoc.version>
     <mockito.version>5.18.0</mockito.version>
-    <okhttp.version>4.12.0</okhttp.version>
+    <okhttp.version>5.1.0</okhttp.version>
     <org.ow2.asm.version>9.8</org.ow2.asm.version>
     <org.spdx.java.spdx.library.version>2.0.0</org.spdx.java.spdx.library.version>
     <org.spdx.tools.java.version>2.0.1</org.spdx.tools.java.version>
@@ -443,16 +444,22 @@
         <version>${cloudantsdk.version}</version>
       </dependency>
       <dependency>
-        <groupId>junit</groupId>
-        <artifactId>junit</artifactId>
+        <groupId>org.junit.platform</groupId>
+        <artifactId>junit-platform-launcher</artifactId>
+        <version>${junit-platform-launcher.version}</version>
+        <scope>test</scope>
+      </dependency>
+      <dependency>
+        <groupId>org.junit.jupiter</groupId>
+        <artifactId>junit-jupiter-engine</artifactId>
+        <version>${junit.version}</version>
+        <scope>test</scope>
+      </dependency>
+      <dependency>
+        <groupId>org.junit.vintage</groupId>
+        <artifactId>junit-vintage-engine</artifactId>
         <version>${junit.version}</version>
         <scope>test</scope>
-        <exclusions>
-          <exclusion>
-            <groupId>org.hamcrest</groupId>
-            <artifactId>hamcrest-core</artifactId>
-          </exclusion>
-        </exclusions>
       </dependency>
       <dependency>
         <groupId>org.dom4j</groupId>
@@ -632,6 +639,13 @@
         <artifactId>joda-time</artifactId>
         <version>${joda-time.version}</version>
       </dependency>
+      <dependency>
+        <groupId>org.junit</groupId>
+        <artifactId>junit-bom</artifactId>
+        <version>${junit.version}</version>
+        <type>pom</type>
+        <scope>import</scope>
+      </dependency>
     </dependencies>
   </dependencyManagement>
   <build>
diff --git a/rest/authorization-server/pom.xml b/rest/authorization-server/pom.xml
index 49c725858d..76e8731c25 100644
--- a/rest/authorization-server/pom.xml
+++ b/rest/authorization-server/pom.xml
@@ -84,18 +84,6 @@
                 </exclusion>
             </exclusions>
         </dependency>
-        <dependency>
-            <groupId>junit</groupId>
-            <artifactId>junit</artifactId>
-            <version>${junit.version}</version>
-            <scope>test</scope>
-            <exclusions>
-                <exclusion>
-                    <groupId>org.hamcrest</groupId>
-                    <artifactId>hamcrest-core</artifactId>
-                </exclusion>
-            </exclusions>
-        </dependency>
         <dependency>
             <groupId>org.springframework.security</groupId>
             <artifactId>spring-security-test</artifactId>
diff --git a/rest/resource-server/pom.xml b/rest/resource-server/pom.xml
index 9d7c6809ba..fd8c122f56 100644
--- a/rest/resource-server/pom.xml
+++ b/rest/resource-server/pom.xml
@@ -132,18 +132,6 @@
                 </exclusion>
             </exclusions>
         </dependency>
-        <dependency>
-            <groupId>junit</groupId>
-            <artifactId>junit</artifactId>
-            <version>${junit.version}</version>
-            <scope>test</scope>
-            <exclusions>
-                <exclusion>
-                    <groupId>org.hamcrest</groupId>
-                    <artifactId>hamcrest-core</artifactId>
-                </exclusion>
-            </exclusions>
-        </dependency>
         <dependency>
             <groupId>org.springframework.security</groupId>
             <artifactId>spring-security-test</artifactId>