diff --git a/README.md b/README.md
index 976df909..8584e620 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-RC3"
+    compile "com.github.akarnokd:rxjava3-extensions:3.0.0-RC4"
 }
 ```
 
diff --git a/build.gradle b/build.gradle
index aec939ae..a4c08a91 100644
--- a/build.gradle
+++ b/build.gradle
@@ -49,7 +49,7 @@ 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-RC3"
+    compile "io.reactivex.rxjava3:rxjava:3.0.0-RC4"
 
     testCompile group: 'junit', name: 'junit', version: '4.12'
 
diff --git a/gradle.properties b/gradle.properties
index 75df9ab9..27c3713e 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -1 +1 @@
-version=3.0.0-RC3
+version=3.0.0-RC4