diff --git a/CHANGELOG.md b/CHANGELOG.md
index 5fcbdab..408cfc3 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -3,6 +3,9 @@
 Note the first digit of every adapter version corresponds to the major version of the Chartboost Mediation SDK compatible with that adapter. 
 Adapters are compatible with any Chartboost Mediation SDK version within that major version.
 
+### 4.2.21.1.0
+- This version of the adapter has been certified with HyBid SDK 2.21.1.
+
 ### 4.2.17.0.2
 - Banner impressions are now tracked on ad show using ImpressionTrackingMethod.AD_VIEWABLE.
 
diff --git a/README.md b/README.md
index 923b554..22a03e8 100644
--- a/README.md
+++ b/README.md
@@ -13,7 +13,7 @@ The Chartboost Mediation Verve adapter mediates HyBid via the Chartboost Mediati
 
 In your `build.gradle`, add the following entry:
 ```
-    implementation "com.chartboost:chartboost-mediation-adapter-verve:4.2.17.0.2"
+    implementation "com.chartboost:chartboost-mediation-adapter-verve:4.2.21.1.0"
 ```
 
 ## Contributions
diff --git a/VerveAdapter/build.gradle.kts b/VerveAdapter/build.gradle.kts
index 80ce7b9..affdce8 100644
--- a/VerveAdapter/build.gradle.kts
+++ b/VerveAdapter/build.gradle.kts
@@ -36,7 +36,7 @@ android {
         minSdk = 21
         targetSdk = 33
         // If you touch the following line, don't forget to update scripts/get_rc_version.zsh
-        android.defaultConfig.versionName = System.getenv("VERSION_OVERRIDE") ?: "4.2.17.0.2"
+        android.defaultConfig.versionName = System.getenv("VERSION_OVERRIDE") ?: "4.2.21.1.0"
         buildConfigField("String", "CHARTBOOST_MEDIATION_VERVE_ADAPTER_VERSION", "\"${android.defaultConfig.versionName}\"")
 
         consumerProguardFiles("proguard-rules.pro")
@@ -73,7 +73,7 @@ dependencies {
     "remoteImplementation"("com.chartboost:chartboost-mediation-sdk:4.0.0")
 
     // Partner SDK
-    implementation("net.pubnative:hybid.sdk:2.17.0")
+    implementation("net.pubnative:hybid.sdk:2.21.1")
 
     // Adapter Dependencies
     implementation("org.jetbrains.kotlinx:kotlinx-coroutines-android:1.6.4")