diff --git a/asciidoctoreditorconfig/src/main/groovy/org/asciidoctor/gradle/editorconfig/AsciidoctorEditorConfigGenerator.groovy b/asciidoctoreditorconfig/src/main/groovy/org/asciidoctor/gradle/editorconfig/AsciidoctorEditorConfigGenerator.groovy
index a36f20911..9c755ac39 100644
--- a/asciidoctoreditorconfig/src/main/groovy/org/asciidoctor/gradle/editorconfig/AsciidoctorEditorConfigGenerator.groovy
+++ b/asciidoctoreditorconfig/src/main/groovy/org/asciidoctor/gradle/editorconfig/AsciidoctorEditorConfigGenerator.groovy
@@ -55,6 +55,9 @@ class AsciidoctorEditorConfigGenerator extends DefaultTask {
     private Object outputDir
 
     AsciidoctorEditorConfigGenerator() {
+        notCompatibleWithConfigurationCache(
+                'Asciidoctor Gradle 4.x is not compatible with CC. Wait for the 5.x release'
+        )
         this.projectOperations = ProjectOperations.find(project)
         this.outputDir = project.projectDir
         this.outputFile = project.provider({
diff --git a/base/src/main/groovy/org/asciidoctor/gradle/base/AbstractAsciidoctorBaseTask.groovy b/base/src/main/groovy/org/asciidoctor/gradle/base/AbstractAsciidoctorBaseTask.groovy
index 0839d1181..9c23b7136 100644
--- a/base/src/main/groovy/org/asciidoctor/gradle/base/AbstractAsciidoctorBaseTask.groovy
+++ b/base/src/main/groovy/org/asciidoctor/gradle/base/AbstractAsciidoctorBaseTask.groovy
@@ -665,6 +665,9 @@ abstract class AbstractAsciidoctorBaseTask extends DefaultTask implements Asciid
     @SuppressWarnings('ThisReferenceEscapesConstructor')
     protected AbstractAsciidoctorBaseTask() {
         super()
+        notCompatibleWithConfigurationCache(
+                'Asciidoctor Gradle 4.x is not compatible with CC. Wait for the 5.x release'
+        )
         this.projectOperations = ProjectOperations.find(project)
         this.intermediateArtifactPattern = project.objects.property(PatternSet)
         this.srcDir = createDirectoryProperty(project)