diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
new file mode 100644
index 0000000..079dc0d
--- /dev/null
+++ b/.pre-commit-config.yaml
@@ -0,0 +1,14 @@
+repos:
+-   repo: https://github.com/pre-commit/pre-commit-hooks
+    rev: v4.6.0
+    hooks:
+    -   id: trailing-whitespace
+    -   id: end-of-file-fixer
+    -   id: check-yaml
+    -   id: check-added-large-files
+-   repo: https://github.com/networknt/pre-commit-hook-keyword
+    rev: f17c4de14fc24420f6768c19cad06ba03af06d86
+    hooks:
+    -   id: keywordscan
+        args: ["--keywords=c3VubGlmZQ==,Y2liYw==,c3VuIGxpZmU="]
+        types: ["text"]
diff --git a/README.md b/README.md
index 442265c..c5c8e30 100644
--- a/README.md
+++ b/README.md
@@ -5,7 +5,7 @@ An HTTP client based on JDK 11 http-client to invoke APIs with client-side cross
 
 The purpose of the client module is trying to help the user to handler SSL cert load and JWT token process.
 
-###  Synchronous call 
+###  Synchronous call
 
 ```text
         HttpClientRequest httpClientRequest = new HttpClientRequest();
@@ -56,7 +56,7 @@ The purpose of the client module is trying to help the user to handler SSL cert
 
 ### Connectionpool
 
-JDK 11 http connection build connection pool internal and it will select the connection from pool base on certain logic. 
+JDK 11 http connection build connection pool internal and it will select the connection from pool base on certain logic.
 
 
 ### Connection with proxy.
@@ -115,7 +115,7 @@ Java HttpClient by default will load default JDK cacerts for https request, if t
 ```
   # trust store contains certifictes that server needs. Enable if tls is used.
   loadTrustStore: false
-``` 
+```
 
 If we need load self-signed trust from client truststore, set the config value to true:
 
@@ -124,4 +124,4 @@ If we need load self-signed trust from client truststore, set the config value t
   loadTrustStore: true
 ```
 
-System will load the client truststore and default certs together for SSL context
\ No newline at end of file
+System will load the client truststore and default certs together for SSL context
diff --git a/src/main/java/com/networknt/client/oauth/SignKeyRequest.java b/src/main/java/com/networknt/client/oauth/SignKeyRequest.java
index 8c4abbd..1afdd08 100644
--- a/src/main/java/com/networknt/client/oauth/SignKeyRequest.java
+++ b/src/main/java/com/networknt/client/oauth/SignKeyRequest.java
@@ -26,7 +26,7 @@
 /**
  * The configuration is coming from the sign/key section in the client.yml file. This request is used
  * to get the key for sign verification. The proxy configuration is defined in the sign section as it
- * is not possible the same service using two different proxy servers.  
+ * is not possible the same service using two different proxy servers.
  *
  * @author Steve Hu
  */
diff --git a/src/main/java/com/networknt/http/client/ssl/TLSConfig.java b/src/main/java/com/networknt/http/client/ssl/TLSConfig.java
index 79e09ce..9603da6 100644
--- a/src/main/java/com/networknt/http/client/ssl/TLSConfig.java
+++ b/src/main/java/com/networknt/http/client/ssl/TLSConfig.java
@@ -18,7 +18,7 @@
 
 /**
  * This class holds configuration values related to server identify check.
- * 
+ *
  * @author Daniel Zhao
  *
  */
@@ -34,5 +34,5 @@ private TLSConfig(boolean checkServerIdentify) {
     public boolean getCheckServerIdentity() {
     	return checkServerIdentify;
     }
-    
+
 }
diff --git a/src/main/java/org/apache/hc/client5/http/ssl/copied/DistinguishedNameParser.java b/src/main/java/org/apache/hc/client5/http/ssl/copied/DistinguishedNameParser.java
index ca99dd5..2c82fc4 100644
--- a/src/main/java/org/apache/hc/client5/http/ssl/copied/DistinguishedNameParser.java
+++ b/src/main/java/org/apache/hc/client5/http/ssl/copied/DistinguishedNameParser.java
@@ -128,4 +128,3 @@ public void copyUnquotedContent(
     }
 
 }
-