diff --git a/README.md b/README.md
index fe19df02..dc84c487 100644
--- a/README.md
+++ b/README.md
@@ -13,7 +13,7 @@ RxJava 3.x implementation of extra sources, operators and components and ports o
 
 ```
 dependencies {
-    compile "com.github.akarnokd:rxjava3-extensions:3.0.0-RC5"
+    compile "com.github.akarnokd:rxjava3-extensions:3.0.0-RC6"
 }
 ```
 
diff --git a/build.gradle b/build.gradle
index bd476631..955a6507 100644
--- a/build.gradle
+++ b/build.gradle
@@ -47,7 +47,7 @@ dependencies {
     signature 'org.codehaus.mojo.signature:java16:1.1@signature'
 
     compile "org.reactivestreams:reactive-streams:1.0.3"
-    compile "io.reactivex.rxjava3:rxjava:3.0.0-RC5"
+    compile "io.reactivex.rxjava3:rxjava:3.0.0-RC6"
 
     testCompile group: 'junit', name: 'junit', version: '4.12'
 
diff --git a/gradle.properties b/gradle.properties
index 3d5e2319..d74bab4a 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -1,6 +1,6 @@
 GROUP=com.github.akarnokd
-VERSION_NAME=3.0.0-RC5
-version=3.0.0-RC5
+VERSION_NAME=3.0.0-RC6
+version=3.0.0-RC6
 
 POM_ARTIFACT_ID=rxjava3-extensions
 POM_NAME=RxJava 3 extra sources, operators and components
diff --git a/src/main/java/hu/akarnokd/rxjava3/schedulers/ParallelScheduler.java b/src/main/java/hu/akarnokd/rxjava3/schedulers/ParallelScheduler.java
index 98433444..bcd56fec 100644
--- a/src/main/java/hu/akarnokd/rxjava3/schedulers/ParallelScheduler.java
+++ b/src/main/java/hu/akarnokd/rxjava3/schedulers/ParallelScheduler.java
@@ -22,7 +22,6 @@
 import io.reactivex.rxjava3.core.Scheduler;
 import io.reactivex.rxjava3.disposables.*;
 import io.reactivex.rxjava3.exceptions.Exceptions;
-import io.reactivex.rxjava3.internal.disposables.DisposableContainer;
 import io.reactivex.rxjava3.internal.functions.Functions;
 import io.reactivex.rxjava3.internal.schedulers.RxThreadFactory;
 import io.reactivex.rxjava3.plugins.RxJavaPlugins;