diff --git a/pom.xml b/pom.xml
index d117a51..46e950b 100644
--- a/pom.xml
+++ b/pom.xml
@@ -61,7 +61,7 @@
         <!-- Dependency versions -->
         <commons-exec.version>1.4.0</commons-exec.version>
         <commons-lang.version>2.6</commons-lang.version>
-        <jackson.version>2.17.2</jackson.version>
+        <jackson.version>2.18.12</jackson.version>
         <junit-jupiter.version>6.1.0</junit-jupiter.version>
         <junit.version>4.13.2</junit.version>
         <lombok.version>1.18.46</lombok.version>
@@ -359,7 +359,7 @@
                     <configuration>
                         <skip>false</skip>
                         <skipTests>false</skipTests>
-                        <argLine>-Xmx1024m -Dfile.encoding=UTF-8</argLine>
+                        <argLine>@{argLine} -Xmx1024m -Dfile.encoding=UTF-8</argLine>
                         <additionalClasspathElements>
                             <additionalClasspathElement>${basedir}/target/test-classes</additionalClasspathElement>
                         </additionalClasspathElements>
diff --git a/src/main/java/io/github/easy4j/opencode/OpenCodeHttpClientConfig.java b/src/main/java/io/github/easy4j/opencode/OpenCodeHttpClientConfig.java
index 05e1110..7dd3fd3 100644
--- a/src/main/java/io/github/easy4j/opencode/OpenCodeHttpClientConfig.java
+++ b/src/main/java/io/github/easy4j/opencode/OpenCodeHttpClientConfig.java
@@ -130,6 +130,26 @@ public class OpenCodeHttpClientConfig {
      */
     private String defaultAgent;
 
+    /** Legacy bean alias for {@link #getBaseUrl()}. */
+    public String getServerUrl() {
+        return baseUrl;
+    }
+
+    /** Sets the server URL through the legacy bean property. */
+    public void setServerUrl(String serverUrl) {
+        this.baseUrl = serverUrl;
+    }
+
+    /** Legacy bean alias for {@link #getStreamEventQueueCapacity()}. */
+    public int getSseEventQueueCapacity() {
+        return streamEventQueueCapacity;
+    }
+
+    /** Sets the event queue capacity through the legacy bean property. */
+    public void setSseEventQueueCapacity(int capacity) {
+        this.streamEventQueueCapacity = capacity;
+    }
+
     /**
      * 解析用于 HTTP Basic Auth 的密码。
      *
diff --git a/src/test/java/io/github/easy4j/opencode/OpenCodeHttpClientConfigTest.java b/src/test/java/io/github/easy4j/opencode/OpenCodeHttpClientConfigTest.java
index 08612d6..d8d0382 100644
--- a/src/test/java/io/github/easy4j/opencode/OpenCodeHttpClientConfigTest.java
+++ b/src/test/java/io/github/easy4j/opencode/OpenCodeHttpClientConfigTest.java
@@ -58,4 +58,32 @@ void shouldKeepLegacySseEventQueueAlias() {
         config.setSseEventQueueCapacity(17);
         assertEquals(17, config.getStreamEventQueueCapacity());
     }
+
+    @Test
+    void aliasesShareCanonicalState() {
+        OpenCodeHttpClientConfig config = new OpenCodeHttpClientConfig();
+        config.setServerUrl("http://legacy:4096");
+        assertEquals("http://legacy:4096", config.getBaseUrl());
+        config.setBaseUrl("http://canonical:4096");
+        assertEquals("http://canonical:4096", config.getServerUrl());
+        config.setStreamEventQueueCapacity(23);
+        assertEquals(23, config.getSseEventQueueCapacity());
+        config.setSseEventQueueCapacity(31);
+        assertEquals(31, config.getStreamEventQueueCapacity());
+    }
+
+    @Test
+    void jsonBindsBothPropertyNamesAndRoundTrips() throws Exception {
+        com.fasterxml.jackson.databind.ObjectMapper mapper = new com.fasterxml.jackson.databind.ObjectMapper();
+        for (String names : new String[]{"serverUrl,sseEventQueueCapacity", "baseUrl,streamEventQueueCapacity"}) {
+            String[] properties = names.split(",");
+            String json = "{\"" + properties[0] + "\":\"http://json:4096\",\"" + properties[1] + "\":37}";
+            OpenCodeHttpClientConfig config = mapper.readValue(json, OpenCodeHttpClientConfig.class);
+            assertEquals("http://json:4096", config.getBaseUrl());
+            assertEquals(config.getBaseUrl(), config.getServerUrl());
+            assertEquals(37, config.getStreamEventQueueCapacity());
+            assertEquals(37, config.getSseEventQueueCapacity());
+            assertEquals(config, mapper.readValue(mapper.writeValueAsString(config), OpenCodeHttpClientConfig.class));
+        }
+    }
 }