diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index ff371f5e4..d3d8e997e 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -46,8 +46,8 @@ jobs:
           - 13
           - 14
           - 15
-#          - 16
-#          - 17
+          - 16
+          - 17
     steps:
       - name: Git checkout
         uses: actions/checkout@v2
@@ -58,7 +58,7 @@ jobs:
       - name: 'cygnus-common Unit Tests (Java ${{ matrix.java-version }})'
         run: |
           cd "${GITHUB_WORKSPACE}"/cygnus-common
-          mvn -q test
+          mvn -q test -DargLine="--add-opens=java.base/java.util=ALL-UNNAMED"
           # Build and install cygnus-common, this is necessary because it is a dependency for cygnus-ngsi and others
           mvn -q clean compile exec:exec assembly:single
           VERSION=$(cat pom.xml | grep version | sed -n '1p' | sed -ne '/<version>/s#\s*<[^>]*>\s*##gp' | sed 's/ //g')
@@ -66,11 +66,11 @@ jobs:
       - name: 'cygnus-ngsi Unit Tests (Java ${{ matrix.java-version }})'
         run: |
           cd "${GITHUB_WORKSPACE}"/cygnus-ngsi
-          mvn -q test
+          mvn -q test -DargLine="--add-opens=java.base/java.util=ALL-UNNAMED"
       - name: 'cygnus-ngsi-ld Unit Tests (Java ${{ matrix.java-version }})'
         run: |
           cd "${GITHUB_WORKSPACE}"/cygnus-ngsi-ld
-          mvn -q test
+          mvn -q test -DargLine="--add-opens=java.base/java.util=ALL-UNNAMED"
       # FIXME: placeholder for future cygnus-twitter tests    
       #- name: 'cygnus-twitter Unit Tests (Java ${{ matrix.java-version }})'
       #  run: |
diff --git a/cygnus-common/pom.xml b/cygnus-common/pom.xml
index b0598b381..1f0dad58f 100644
--- a/cygnus-common/pom.xml
+++ b/cygnus-common/pom.xml
@@ -64,7 +64,7 @@
         <dependency>
             <groupId>com.google.code.gson</groupId>
             <artifactId>gson</artifactId>
-            <version>2.6.2</version>
+            <version>2.10.1</version>
         </dependency>
         <!-- Required by the Management Interface and CygnusGropuingRule(s) -->
         <dependency>
diff --git a/cygnus-ngsi/pom.xml b/cygnus-ngsi/pom.xml
index 20fe49a3c..be6862d89 100644
--- a/cygnus-ngsi/pom.xml
+++ b/cygnus-ngsi/pom.xml
@@ -174,7 +174,7 @@
                                 <artifactId>maven-surefire-report-plugin</artifactId>
                                 <version>3.0.0</version>
                                 <configuration>
-                                    <aggregate>true</aggregate>
+                                  <aggregate>true</aggregate>
                                 </configuration>
                             </plugin>
                             <plugin>