diff --git a/sources/Android/android-communications/library/src/sdk/java/com/polar/sdk/api/PolarBleApiDefaultImpl.kt b/sources/Android/android-communications/library/src/sdk/java/com/polar/sdk/api/PolarBleApiDefaultImpl.kt
index c29d0629..2b9f1ed1 100644
--- a/sources/Android/android-communications/library/src/sdk/java/com/polar/sdk/api/PolarBleApiDefaultImpl.kt
+++ b/sources/Android/android-communications/library/src/sdk/java/com/polar/sdk/api/PolarBleApiDefaultImpl.kt
@@ -25,6 +25,6 @@ object PolarBleApiDefaultImpl {
      */
     @JvmStatic
     fun versionInfo(): String {
-        return "3.3.4"
+        return "4.0.0-beta"
     }
 }
\ No newline at end of file
diff --git a/sources/iOS/ios-communications/Sources/PolarBleSdk/sdk/api/PolarBleApiDefaultImpl.swift b/sources/iOS/ios-communications/Sources/PolarBleSdk/sdk/api/PolarBleApiDefaultImpl.swift
index 472445d6..4f53ed5e 100644
--- a/sources/iOS/ios-communications/Sources/PolarBleSdk/sdk/api/PolarBleApiDefaultImpl.swift
+++ b/sources/iOS/ios-communications/Sources/PolarBleSdk/sdk/api/PolarBleApiDefaultImpl.swift
@@ -18,6 +18,6 @@ public class PolarBleApiDefaultImpl {
     ///
     /// - Returns: version in format major.minor.patch
     public static func versionInfo() -> String {
-        return "3.3.6"
+        return "4.0.0-beta"
     }
 }