diff --git a/disjob-common/src/main/java/cn/ponfee/disjob/common/dag/DAGExpressionParser.java b/disjob-common/src/main/java/cn/ponfee/disjob/common/dag/DAGExpressionParser.java
index 7084705e0..16ef8a086 100644
--- a/disjob-common/src/main/java/cn/ponfee/disjob/common/dag/DAGExpressionParser.java
+++ b/disjob-common/src/main/java/cn/ponfee/disjob/common/dag/DAGExpressionParser.java
@@ -443,7 +443,9 @@ static String completeParenthesis(String text) {
             String item = list.get(i);
             if (StringUtils.isBlank(item)) {
                 // skip empty string
-            } else if (ALL_SYMBOLS.contains(item)) {
+                continue;
+            }
+            if (ALL_SYMBOLS.contains(item)) {
                 builder.append(item);
             } else if (Str.OPEN.equals(Collects.get(list, i - 1)) && Str.CLOSE.equals(Collects.get(list, i + 1))) {
                 builder.append(item);
diff --git a/disjob-samples/disjob-samples-frameless-worker/pom.xml b/disjob-samples/disjob-samples-frameless-worker/pom.xml
index d25269d59..ee1e2e0c4 100644
--- a/disjob-samples/disjob-samples-frameless-worker/pom.xml
+++ b/disjob-samples/disjob-samples-frameless-worker/pom.xml
@@ -40,7 +40,7 @@
     <dependency>
       <groupId>io.vertx</groupId>
       <artifactId>vertx-web</artifactId>
-      <version>4.5.4</version>
+      <version>4.5.5</version>
     </dependency>
     <dependency>
       <groupId>io.netty</groupId>
diff --git a/pom.xml b/pom.xml
index a46d2eba4..1dbc5806c 100644
--- a/pom.xml
+++ b/pom.xml
@@ -99,7 +99,7 @@
 
     <flatten-maven-plugin.version>1.6.0</flatten-maven-plugin.version>
     <jacoco-maven-plugin.version>0.8.8</jacoco-maven-plugin.version>
-    <maven-gpg-plugin.version>3.1.0</maven-gpg-plugin.version>
+    <maven-gpg-plugin.version>3.2.1</maven-gpg-plugin.version>
   </properties>
 
   <dependencyManagement>