diff --git a/MPChartExample/build.gradle b/MPChartExample/build.gradle
index 3fcd00220f..e12d96e559 100644
--- a/MPChartExample/build.gradle
+++ b/MPChartExample/build.gradle
@@ -6,7 +6,7 @@ android {
     compileSdkVersion 31
     defaultConfig {
         applicationId "com.xxmassdeveloper.mpchartexample"
-        minSdkVersion 16
+        minSdkVersion 19
         targetSdkVersion 31
         versionCode 57
         versionName '3.1.0'
diff --git a/MPChartLib/build.gradle b/MPChartLib/build.gradle
index aeb7d6c6f4..0a3c443621 100644
--- a/MPChartLib/build.gradle
+++ b/MPChartLib/build.gradle
@@ -6,7 +6,7 @@ plugins {
 android {
     compileSdkVersion 31
     defaultConfig {
-        minSdkVersion 14
+        minSdkVersion 19
         targetSdkVersion 31
 
         consumerProguardFiles 'proguard-project.txt'