diff --git a/README.md b/README.md
index 1634bb2..9429804 100644
--- a/README.md
+++ b/README.md
@@ -22,6 +22,8 @@
 
 主项目使用JDK 1.6+和Maven 3+版本构建，其中`demo`子项目需要JDK 1.8+版本。
 
+由于`Testable`的测试也用到了`Testable`本身，本地首次构建时候需要使用`install`而不能只做`package`：
+
 ```bash
-mvn clean package
+mvn clean install
 ```
diff --git a/testable-processor/pom.xml b/testable-processor/pom.xml
index 4358546..8bb22af 100644
--- a/testable-processor/pom.xml
+++ b/testable-processor/pom.xml
@@ -26,13 +26,6 @@
             <artifactId>testable-core</artifactId>
             <version>${testable.version}</version>
         </dependency>
-        <dependency>
-            <groupId>sun.jdk</groupId>
-            <artifactId>tools</artifactId>
-            <version>${java.version}</version>
-            <scope>system</scope>
-            <systemPath>${java.home}/../lib/tools.jar</systemPath>
-        </dependency>
         <dependency>
             <groupId>org.junit.jupiter</groupId>
             <artifactId>junit-jupiter-api</artifactId>
@@ -41,6 +34,26 @@
         </dependency>
     </dependencies>
 
+    <profiles>
+        <profile>
+            <id>tools-jar</id>
+            <activation>
+                <file>
+                    <exists>${java.home}/../lib/tools.jar</exists>
+                </file>
+            </activation>
+            <dependencies>
+                <dependency>
+                    <groupId>sun.jdk</groupId>
+                    <artifactId>tools</artifactId>
+                    <version>${java.version}</version>
+                    <scope>system</scope>
+                    <systemPath>${java.home}/../lib/tools.jar</systemPath>
+                </dependency>
+            </dependencies>
+        </profile>
+    </profiles>
+
     <build>
         <plugins>
             <plugin>