diff --git a/build.gradle b/build.gradle
index 9382658..f00a30f 100644
--- a/build.gradle
+++ b/build.gradle
@@ -4,7 +4,7 @@ ext {
     libraries = [
             kotlinx_cli               : "0.3.2",
 
-            kotlinx_coroutines_core   : "1.6.1",
+            kotlinx_coroutines_core   : "1.6.4",
 
             joor_java                 : "0.9.14",
 
@@ -60,7 +60,7 @@ dependencies {
 }
 
 buildscript {
-    ext.kotlin_version = '1.6.21'
+    ext.kotlin_version = '1.7.21'
 
     repositories {
         jcenter()
diff --git a/core/src/main/java/com/safframework/rxcache/RxCache.java b/core/src/main/java/com/safframework/rxcache/RxCache.java
index 406ecc0..bf4ebd7 100644
--- a/core/src/main/java/com/safframework/rxcache/RxCache.java
+++ b/core/src/main/java/com/safframework/rxcache/RxCache.java
@@ -271,6 +271,11 @@ public boolean containsKey(String key) {
         return cacheRepository.containsKey(key);
     }
 
+    /**
+     * 校验 RxCache 是否可以获取这个 key
+     * @param key
+     * @return
+     */
     public boolean checkKey(String key) {
         return cacheRepository.checkKey(key);
     }
diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties
index f2e1eb1..5416585 100644
--- a/gradle/wrapper/gradle-wrapper.properties
+++ b/gradle/wrapper/gradle-wrapper.properties
@@ -2,4 +2,4 @@ distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-7.0-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-7.1.1-bin.zip