Try putting options on a separate interface for just the task

I also tried just defining abstract setter methods, but to no avail

src/main/java/me/champeau/jmh/JMHTask.java

@@ -36,7 +36,7 @@
 /**
  * The JMH task is responsible for launching a JMH benchmark.
  */
-public abstract class JMHTask extends DefaultTask implements JmhParameters {
+public abstract class JMHTask extends DefaultTask implements JmhSetters {
     private final static String JAVA_IO_TMPDIR = "java.io.tmpdir";
 
     @Inject

src/main/java/me/champeau/jmh/JmhParameters.java

@@ -22,54 +22,38 @@
 import org.gradle.api.provider.Property;
 import org.gradle.api.tasks.Input;
 import org.gradle.api.tasks.Optional;
-import org.gradle.api.tasks.options.Option;
 
 public interface JmhParameters extends WithJavaToolchain {
-
-    @Option(option = "jmhVersion", description = "JMH version")
     @Input
     Property<String> getJmhVersion();
 
-    @Option(option = "includeTests", description = "Include test sources in generated jar file")
     @Input
     Property<Boolean> getIncludeTests();
 
-    @Option(option = "includes", description = "Include pattern for benchmarks to be executed")
     @Input
     ListProperty<String> getIncludes();
 
-    @Option(option = "excludes", description = "Exclude pattern for benchmarks to be executed")
     @Input
     ListProperty<String> getExcludes();
 
-    @Option(option = "benchmarkMode", description = "Benchmark mode. Available modes are: [Throughput/thrpt, AverageTime/avgt, SampleTime/sample, SingleShotTime/ss, All/all]")
     @Input
     ListProperty<String> getBenchmarkMode();
 
     @Input
     @Optional
     Property<Integer> getIterations();
 
-    @Option(option = "iterations", description = "Number of measurement iterations to do.")
-    default void setIterations(Integer iterations) {
-        getIterations().set(iterations);
-    }
-
-    @Option(option = "batchSize", description = "Batch size: number of benchmark method calls per operation. (some benchmark modes can ignore this setting)")
     @Input
     @Optional
     Property<Integer> getBatchSize();
 
-    @Option(option = "fork", description = "How many times to forks a single benchmark. Use 0 to disable forking altogether")
     @Input
     @Optional
     Property<Integer> getFork();
 
-    @Option(option = "failOnError", description = "Should JMH fail immediately if any benchmark had experienced the unrecoverable error?")
     @Input
     Property<Boolean> getFailOnError();
 
-    @Option(option = "forceGC", description = "Should JMH force GC between iterations?")
     @Input
     Property<Boolean> getForceGC();
 
@@ -131,7 +115,6 @@ default void setIterations(Integer iterations) {
     @Optional
     Property<String> getJmhTimeout();
 
-    @Option(option = "warmup", description = "")
     @Input
     @Optional
     Property<String> getWarmup();
@@ -144,7 +127,6 @@ default void setIterations(Integer iterations) {
     @Optional
     Property<Integer> getWarmupForks();
 
-    @Option(option = "warmupIterations", description = "")
     @Input
     @Optional
     Property<Integer> getWarmupIterations();

src/main/java/me/champeau/jmh/JmhSetters.java

@@ -0,0 +1,19 @@
+package me.champeau.jmh;
+
+import org.gradle.api.provider.ListProperty;
+import org.gradle.api.tasks.options.Option;
+
+import java.util.List;
+
+public interface JmhSetters extends JmhParameters {
+
+    @Option(option = "iterations", description = "Number of measurement iterations to do.")
+    default void setIterations(Integer iterations) {
+        this.getIterations().set(iterations);
+    }
+
+    @Option(option = "includes", description = "include pattern (regular expression) for benchmarks to be executed")
+    default void setIncludes(List<String> includes) {
+        this.getIncludes().set(includes);
+    }
+}