diff --git a/pom.xml b/pom.xml
index c6d17c4..db3fbb5 100644
--- a/pom.xml
+++ b/pom.xml
@@ -4,7 +4,7 @@
     <modelVersion>4.0.0</modelVersion>
     <groupId>com.czcb.scfs</groupId>
     <artifactId>scfs-api-sdk</artifactId>
-    <version>2.0.20</version>
+    <version>2.0.21-snapshot</version>
     <name>scfs-api-sdk</name>
     <description>scfs-api-sdk</description>
     <packaging>pom</packaging>
@@ -75,27 +75,27 @@
             <dependency>
                 <groupId>com.czcb.scfs</groupId>
                 <artifactId>scfs-api-core</artifactId>
-                <version>2.0.20</version>
+                <version>2.0.21-snapshot</version>
             </dependency>
             <dependency>
                 <groupId>com.czcb.scfs</groupId>
                 <artifactId>scfs-api-rsa</artifactId>
-                <version>2.0.20</version>
+                <version>2.0.21-snapshot</version>
             </dependency>
             <dependency>
                 <groupId>com.czcb.scfs</groupId>
                 <artifactId>scfs-api-service</artifactId>
-                <version>2.0.20</version>
+                <version>2.0.21-snapshot</version>
             </dependency>
             <dependency>
                 <groupId>com.czcb.scfs</groupId>
                 <artifactId>scfs-api-sm</artifactId>
-                <version>2.0.20</version>
+                <version>2.0.21-snapshot</version>
             </dependency>
             <dependency>
                 <groupId>com.czcb.scfs</groupId>
                 <artifactId>scfs-api-spring-boot-starter</artifactId>
-                <version>2.0.20</version>
+                <version>2.0.21-snapshot</version>
             </dependency>
 
             <dependency>
diff --git a/readme.md b/readme.md
index e6237a7..c5ed7db 100644
--- a/readme.md
+++ b/readme.md
@@ -63,10 +63,10 @@ openssl x509 -req -days 3650 -in rsa_csr.pem -signkey rsa_private_key.pem -out r
 
 ```shell
 # 开发测试阶段使用快照版本
-mvn versions:set -DnewVersion=2.0.20-snapshot
+mvn versions:set -DnewVersion=2.0.21-snapshot
 
 # 正式版本，版本号加一
-mvn versions:set -DnewVersion=2.0.20
+mvn versions:set -DnewVersion=2.0.21
 ```
 
 ## 代码扫描
diff --git a/scfs-api-core/pom.xml b/scfs-api-core/pom.xml
index fac6e48..92c0179 100644
--- a/scfs-api-core/pom.xml
+++ b/scfs-api-core/pom.xml
@@ -5,11 +5,11 @@
     <parent>
         <groupId>com.czcb.scfs</groupId>
         <artifactId>scfs-api-sdk</artifactId>
-        <version>2.0.20</version>
+        <version>2.0.21-snapshot</version>
     </parent>
 
     <artifactId>scfs-api-core</artifactId>
-    <version>2.0.20</version>
+    <version>2.0.21-snapshot</version>
     <name>scfs-api-core:核心模块</name>
     <description>scfs-api-core</description>
     <packaging>jar</packaging>
diff --git a/scfs-api-rsa/pom.xml b/scfs-api-rsa/pom.xml
index 27ff8c4..9790502 100644
--- a/scfs-api-rsa/pom.xml
+++ b/scfs-api-rsa/pom.xml
@@ -5,11 +5,11 @@
     <parent>
         <groupId>com.czcb.scfs</groupId>
         <artifactId>scfs-api-sdk</artifactId>
-        <version>2.0.20</version>
+        <version>2.0.21-snapshot</version>
     </parent>
 
     <artifactId>scfs-api-rsa</artifactId>
-    <version>2.0.20</version>
+    <version>2.0.21-snapshot</version>
     <name>scfs-api-rsa:RSA模块</name>
     <description>封装RSA、AES国密算法</description>
 
@@ -17,7 +17,7 @@
         <dependency>
             <groupId>com.czcb.scfs</groupId>
             <artifactId>scfs-api-core</artifactId>
-            <version>2.0.20</version>
+            <version>2.0.21-snapshot</version>
         </dependency>
     </dependencies>
 </project>
diff --git a/scfs-api-service/pom.xml b/scfs-api-service/pom.xml
index 313511d..5d98ecb 100644
--- a/scfs-api-service/pom.xml
+++ b/scfs-api-service/pom.xml
@@ -5,11 +5,11 @@
     <parent>
         <groupId>com.czcb.scfs</groupId>
         <artifactId>scfs-api-sdk</artifactId>
-        <version>2.0.20</version>
+        <version>2.0.21-snapshot</version>
     </parent>
 
     <artifactId>scfs-api-service</artifactId>
-    <version>2.0.20</version>
+    <version>2.0.21-snapshot</version>
     <name>scfs-api-service:业务接口模型</name>
     <description>业务接口模型</description>
     <packaging>jar</packaging>
@@ -24,7 +24,7 @@
         <dependency>
             <groupId>com.czcb.scfs</groupId>
             <artifactId>scfs-api-core</artifactId>
-            <version>2.0.20</version>
+            <version>2.0.21-snapshot</version>
         </dependency>
     </dependencies>
 </project>
diff --git a/scfs-api-sm/pom.xml b/scfs-api-sm/pom.xml
index 1d7429f..fa4eb5c 100644
--- a/scfs-api-sm/pom.xml
+++ b/scfs-api-sm/pom.xml
@@ -5,11 +5,11 @@
     <parent>
         <groupId>com.czcb.scfs</groupId>
         <artifactId>scfs-api-sdk</artifactId>
-        <version>2.0.20</version>
+        <version>2.0.21-snapshot</version>
     </parent>
 
     <artifactId>scfs-api-sm</artifactId>
-    <version>2.0.20</version>
+    <version>2.0.21-snapshot</version>
     <name>scfs-api-sm:国密模块</name>
     <description>封装SM2、SM4国密算法</description>
 
@@ -17,7 +17,7 @@
         <dependency>
             <groupId>com.czcb.scfs</groupId>
             <artifactId>scfs-api-core</artifactId>
-            <version>2.0.20</version>
+            <version>2.0.21-snapshot</version>
         </dependency>
 
         <!-- https://mvnrepository.com/artifact/com.tencent.kona/kona-crypto -->
diff --git a/scfs-api-spring-boot-starter/pom.xml b/scfs-api-spring-boot-starter/pom.xml
index ee51bf9..f6b04ee 100644
--- a/scfs-api-spring-boot-starter/pom.xml
+++ b/scfs-api-spring-boot-starter/pom.xml
@@ -5,11 +5,11 @@
     <parent>
         <groupId>com.czcb.scfs</groupId>
         <artifactId>scfs-api-sdk</artifactId>
-        <version>2.0.20</version>
+        <version>2.0.21-snapshot</version>
     </parent>
 
     <artifactId>scfs-api-spring-boot-starter</artifactId>
-    <version>2.0.20</version>
+    <version>2.0.21-snapshot</version>
     <name>scfs-spring-boot-starter</name>
     <description>scfs-spring-boot-starter</description>
 
@@ -17,22 +17,22 @@
         <dependency>
             <groupId>com.czcb.scfs</groupId>
             <artifactId>scfs-api-core</artifactId>
-            <version>2.0.20</version>
+            <version>2.0.21-snapshot</version>
         </dependency>
         <dependency>
             <groupId>com.czcb.scfs</groupId>
             <artifactId>scfs-api-service</artifactId>
-            <version>2.0.20</version>
+            <version>2.0.21-snapshot</version>
         </dependency>
         <dependency>
             <groupId>com.czcb.scfs</groupId>
             <artifactId>scfs-api-rsa</artifactId>
-            <version>2.0.20</version>
+            <version>2.0.21-snapshot</version>
         </dependency>
         <dependency>
             <groupId>com.czcb.scfs</groupId>
             <artifactId>scfs-api-sm</artifactId>
-            <version>2.0.20</version>
+            <version>2.0.21-snapshot</version>
         </dependency>
         <dependency>
             <groupId>org.springframework.boot</groupId>
diff --git a/scfs-api-test/pom.xml b/scfs-api-test/pom.xml
index 9e69c86..5bcb968 100644
--- a/scfs-api-test/pom.xml
+++ b/scfs-api-test/pom.xml
@@ -5,11 +5,11 @@
     <parent>
         <groupId>com.czcb.scfs</groupId>
         <artifactId>scfs-api-sdk</artifactId>
-        <version>2.0.20</version>
+        <version>2.0.21-snapshot</version>
     </parent>
 
     <artifactId>scfs-api-test</artifactId>
-    <version>2.0.20</version>
+    <version>2.0.21-snapshot</version>
     <name>scfs-api-test</name>
     <description>scfs-api-test</description>