diff --git a/README.md b/README.md
index 98e6500e..0b306608 100644
--- a/README.md
+++ b/README.md
@@ -127,7 +127,7 @@ public class ImageTest {
 
 ## Requirements
 
-- Gradle 7.4 or higher
+- Gradle 7.6.4 or higher
 
 ## Why Another Image Builder?
 
diff --git a/src/functionalTest/kotlin/io/github/sgtsilvio/gradle/oci/GradleVersionsTest.kt b/src/functionalTest/kotlin/io/github/sgtsilvio/gradle/oci/GradleVersionsTest.kt
index dc96e90f..956d4dd9 100644
--- a/src/functionalTest/kotlin/io/github/sgtsilvio/gradle/oci/GradleVersionsTest.kt
+++ b/src/functionalTest/kotlin/io/github/sgtsilvio/gradle/oci/GradleVersionsTest.kt
@@ -16,9 +16,10 @@ internal class GradleVersionsTest {
     @ParameterizedTest
     @ValueSource(
         strings = [
-            "7.4", // minimum version
-            "8.5", // highest version not fulfilling version check >= 8.6 in OciImageDefinitionImpl
-            "8.6", // lowest version fulfilling version check >= 8.6 in OciImageDefinitionImpl
+            "7.6.4", // minimum version
+            "8.3", // minimum 8.x version
+            "8.10.2", // highest version not fulfilling version check >= 8.11 in VariantSelector
+            "8.11", // lowest version fulfilling version check >= 8.11 in VariantSelector
         ]
     )
     fun test(gradleVersion: String, @TempDir projectDir: File) {