diff --git a/build.gradle b/build.gradle
index da1706e..0ca217e 100644
--- a/build.gradle
+++ b/build.gradle
@@ -35,13 +35,13 @@ apply plugin: 'kotlin-android'
 
 android {
     defaultConfig {
-        minSdkVersion 21
+        minSdkVersion 23
     }
 }
 
 dependencies {
     compileOnly 'androidx.legacy:legacy-support-v4:1.0.0'
-    api 'com.urbanairship.android:urbanairship-core:18.1.3'
+    api 'com.urbanairship.android:urbanairship-core:19.3.0'
     testImplementation 'junit:junit:4.13.2'
     testImplementation files('libs/java-json.jar')
 }