diff --git a/LibKeyValue/src/main/java/com/mx/keyvalue/MXKeyValue.kt b/LibKeyValue/src/main/java/com/mx/keyvalue/MXKeyValue.kt
index 5c489c946ce8595a07308a571bc2defa8ee22f2f..64bd5432f525a227a4c00a1e2bd6b91cfa425889 100644
--- a/LibKeyValue/src/main/java/com/mx/keyvalue/MXKeyValue.kt
+++ b/LibKeyValue/src/main/java/com/mx/keyvalue/MXKeyValue.kt
@@ -71,7 +71,7 @@ class MXKeyValue private constructor(private val context: Context, private val s
     fun set(key: String, value: String?, expire_time: Long? = null): Boolean {
         val key_trim = key.trim()
         if (key_trim.isBlank()) return false
-        val result = if (value != null && value.isNotEmpty()) {
+        val result = if (!value.isNullOrEmpty()) {
             store.set(key_trim, value, expire_time)
         } else {
             store.delete(key_trim)
diff --git a/README.md b/README.md
index fbbe9608a98a524deca2b8245eb69d8eb59b3e8c..4ea1cd676583d6bef2ab3a5a60326d2f53edca07 100644
--- a/README.md
+++ b/README.md
@@ -1,10 +1,11 @@
 # MXKeyValue
 ## 介绍
 基于Sqlite的，支持加密、自定义加密方式的KV数据库
-[![](https://jitpack.io/v/com.gitee.zhangmengxiong/MXKeyValue.svg)](https://jitpack.io/#com.gitee.zhangmengxiong/MXKeyValue)
-库引用： 替换1.1.3 为最新版本
+[![](https://jitpack.io/v/zhangmengxiong/MXKeyValue.svg)](https://jitpack.io/#zhangmengxiong/MXKeyValue)
+
+库引用： 替换1.2.1 为最新版本
 ```gradle
-    implementation 'com.gitee.zhangmengxiong:MXKeyValue:1.2.0'
+    implementation 'com.gitee.zhangmengxiong:MXKeyValue:1.2.1'
 ```
 
 ## 使用方法
diff --git a/build.gradle b/build.gradle
index 5f9726929947b8f4a5eafbe35c3e809f5d4752e9..d7b9c49f5725e8197fb7b9446664d21d5c4fc242 100644
--- a/build.gradle
+++ b/build.gradle
@@ -16,5 +16,5 @@ ext {
     minSdkVersion = 21
 
     versionCode = 1
-    versionName = "1.2.0"
+    versionName = "1.2.1"
 }
\ No newline at end of file