diff --git a/CHANGELOG.md b/CHANGELOG.md
index 33d64bf5..a2531726 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -3,6 +3,7 @@
 ## [Unreleased]
 ### Changed
 - `StepReporter.sendStep` methods now returns `Maybe<String>` with Step ID, by @HardNorth
+- `rxjava` version updated on 2.2.21, by @HardNorth
 
 ## [5.2.25]
 ### Changed
diff --git a/build.gradle b/build.gradle
index 6fb0f53b..581bcd74 100644
--- a/build.gradle
+++ b/build.gradle
@@ -45,7 +45,7 @@ dependencies {
         exclude module: 'guava'
     }
     api 'com.fasterxml.jackson.core:jackson-databind:2.15.4' // Access is needed by HTTP loggers to format JSON
-    api 'io.reactivex.rxjava2:rxjava:2.2.10'
+    api 'io.reactivex.rxjava2:rxjava:2.2.21'
     api 'com.google.code.findbugs:jsr305:3.0.2'
 
     api ("com.squareup.retrofit2:retrofit:${project.retrofit_version}") {