diff --git a/build.gradle b/build.gradle
index 61aeae6ce4..11e6fb7293 100644
--- a/build.gradle
+++ b/build.gradle
@@ -4,7 +4,7 @@ buildscript {
     ext {
         kotlin_version = '1.4.30'
         coreVersion = '1.3.2'
-        rxjava_version = '2.2.20'
+        rxjava_version = '2.2.21'
         rxandroid_version = '2.1.1'
         rxkotlin_version = '2.4.0'
         room_version = '2.2.6'