diff --git a/build.gradle.kts b/build.gradle.kts
index 7864c55b..f74bb2a1 100644
--- a/build.gradle.kts
+++ b/build.gradle.kts
@@ -127,6 +127,7 @@ dependencies {
     testImplementation("org.jenkins-ci.main:jenkins-test-harness:2225.v04fa_3929c9b_5")
     testImplementation("org.jenkins-ci.main:jenkins-test-harness-tools:2.2")
     testImplementation("io.jenkins:configuration-as-code:1.4")
+    testImplementation("io.jenkins.configuration-as-code:test-harness:1.4")
     testImplementation("org.jenkins-ci.plugins:timestamper")
     testImplementation("org.jenkins-ci.plugins:pipeline-stage-step")
     testImplementation("org.jenkins-ci.plugins:pipeline-maven:3.10.0")
diff --git a/src/main/java/hudson/plugins/gradle/injection/InjectionConfig.java b/src/main/java/hudson/plugins/gradle/injection/InjectionConfig.java
index 0fee937f..f00592cf 100644
--- a/src/main/java/hudson/plugins/gradle/injection/InjectionConfig.java
+++ b/src/main/java/hudson/plugins/gradle/injection/InjectionConfig.java
@@ -102,6 +102,9 @@ public class InjectionConfig extends GlobalConfiguration {
     // Legacy property that is not used anymore
     private transient String injectionVcsRepositoryPatterns;
     private VcsRepositoryFilter parsedVcsRepositoryFilter = VcsRepositoryFilter.EMPTY;
+    // Legacy properties, kept for reading old configurations
+    private transient boolean injectMavenExtension;
+    private transient boolean injectCcudExtension;
 
     public InjectionConfig() {
         load();
@@ -367,6 +370,24 @@ public void setCheckForBuildAgentErrors(boolean checkForBuildAgentErrors) {
         this.checkForBuildAgentErrors = checkForBuildAgentErrors;
     }
 
+    public boolean isInjectCcudExtension() {
+        return injectCcudExtension;
+    }
+
+    @DataBoundSetter
+    public void setInjectCcudExtension(boolean injectCcudExtension) {
+        this.injectCcudExtension = injectCcudExtension;
+    }
+
+    public boolean isInjectMavenExtension() {
+        return injectMavenExtension;
+    }
+
+    @DataBoundSetter
+    public void setInjectMavenExtension(boolean injectMavenExtension) {
+        this.injectMavenExtension = injectMavenExtension;
+    }
+
     /**
      * Required to display filter in the UI.
      */
diff --git a/src/test/groovy/hudson/plugins/gradle/injection/InjectionConfigWithCasCTest.groovy b/src/test/groovy/hudson/plugins/gradle/injection/InjectionConfigWithCasCTest.groovy
new file mode 100644
index 00000000..69853418
--- /dev/null
+++ b/src/test/groovy/hudson/plugins/gradle/injection/InjectionConfigWithCasCTest.groovy
@@ -0,0 +1,47 @@
+package hudson.plugins.gradle.injection
+
+
+import hudson.plugins.gradle.AbstractIntegrationTest
+import io.jenkins.plugins.casc.misc.ConfiguredWithCode
+import io.jenkins.plugins.casc.misc.JenkinsConfiguredWithCodeRule
+import org.junit.Rule
+import org.junit.rules.RuleChain
+import spock.lang.Subject
+import spock.lang.Unroll
+
+@Unroll
+@Subject(InjectionConfig.class)
+class InjectionConfigWithCasCTest extends AbstractIntegrationTest {
+    @Rule
+    public final RuleChain rules = RuleChain.outerRule(noSpaceInTmpDirs).around(new JenkinsConfiguredWithCodeRule())
+
+    @ConfiguredWithCode("injection-config.yml")
+    def 'current configuration is readable with JCasC'() {
+        expect:
+        with(InjectionConfig.get()) {
+            it.allowUntrusted == true
+            it.ccudExtensionCustomCoordinates == "mycustom-ccud:ext"
+            it.ccudExtensionVersion == "2.0.1"
+            it.ccudPluginVersion == "2.0.2"
+            it.checkForBuildAgentErrors == true
+            it.enabled == true
+            it.enforceUrl == true
+            it.gradleCaptureTaskInputFiles == true
+            it.gradleInjectionDisabledNodes*.label == ["non-gradle-node"]
+            it.gradleInjectionEnabledNodes*.label == ["gradle-node"]
+            it.gradlePluginRepositoryUrl == "https://plugins.gradle.org"
+            it.gradlePluginVersion == "3.18.1"
+            it.injectMavenExtension == true
+            it.injectCcudExtension == true
+            it.mavenCaptureGoalInputFiles == true
+            it.mavenExtensionCustomCoordinates == "mycustom:ext"
+            it.mavenExtensionRepositoryUrl == "https://repo1.maven.org/maven2"
+            it.mavenExtensionVersion == "1.22.1"
+            it.mavenInjectionDisabledNodes*.label == ["non-maven-node"]
+            it.mavenInjectionEnabledNodes*.label == ["maven-node"]
+            it.server == "http://localhost:5086"
+            it.shortLivedTokenExpiry == 24
+            it.vcsRepositoryFilter == "+:myrepo"
+        }
+    }
+}
diff --git a/src/test/resources/injection-config.yml b/src/test/resources/injection-config.yml
new file mode 100644
index 00000000..ebe8ae1c
--- /dev/null
+++ b/src/test/resources/injection-config.yml
@@ -0,0 +1,30 @@
+jenkins:
+unclassified:
+    injectionConfig:
+        allowUntrusted: true
+        ccudExtensionCustomCoordinates: "mycustom-ccud:ext"
+        ccudExtensionVersion: "2.0.1"
+        ccudPluginVersion: "2.0.2"
+        checkForBuildAgentErrors: true
+        enabled: true
+        enforceUrl: true
+        gradleCaptureTaskInputFiles: true
+        gradleInjectionDisabledNodes:
+            -   label: "non-gradle-node"
+        gradleInjectionEnabledNodes:
+            -   label: "gradle-node"
+        gradlePluginRepositoryUrl: "https://plugins.gradle.org"
+        gradlePluginVersion: "3.18.1"
+        injectMavenExtension: true
+        injectCcudExtension: true
+        mavenCaptureGoalInputFiles: true
+        mavenExtensionCustomCoordinates: "mycustom:ext"
+        mavenExtensionRepositoryUrl: "https://repo1.maven.org/maven2"
+        mavenExtensionVersion: "1.22.1"
+        mavenInjectionDisabledNodes:
+            -   label: "non-maven-node"
+        mavenInjectionEnabledNodes:
+            -   label: "maven-node"
+        server: "http://localhost:5086"
+        shortLivedTokenExpiry: 24
+        vcsRepositoryFilter: "+:myrepo"