diff --git a/CHANGELOG.md b/CHANGELOG.md
index c698e824f..cc6bc464f 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,9 @@
 # CHANGELOG
 
+## v8.8.0 (2026-06-25)
+
+- Adds `params` to `requestPin` ensuring users can pass `easypost_details` to the call
+
 ## v8.7.0 (2026-02-25)
 
 - Adds generic `makeApiCall` function
diff --git a/README.md b/README.md
index ec6aaff5b..6c80cb359 100644
--- a/README.md
+++ b/README.md
@@ -16,7 +16,7 @@ Add this to your project's POM:
 <dependency>
   <groupId>com.easypost</groupId>
   <artifactId>easypost-api-client</artifactId>
-  <version>8.7.0</version>
+  <version>8.8.0</version>
 </dependency>
 ```
 
@@ -25,7 +25,7 @@ Add this to your project's POM:
 Add this to your project's build file:
 
 ```groovy
-implementation "com.easypost:easypost-api-client:8.7.0"
+implementation "com.easypost:easypost-api-client:8.8.0"
 ```
 
 **NOTE:** [Google Gson](http://code.google.com/p/google-gson/) is required.
diff --git a/VERSION b/VERSION
index df5119ec6..3b6825376 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-8.7.0
+8.8.0
diff --git a/pom.xml b/pom.xml
index 23bd125d5..bf5655851 100644
--- a/pom.xml
+++ b/pom.xml
@@ -6,7 +6,7 @@
     <groupId>com.easypost</groupId>
     <artifactId>easypost-api-client</artifactId>
 
-    <version>8.7.0</version>
+    <version>8.8.0</version>
     <packaging>jar</packaging>
 
     <name>com.easypost:easypost-api-client</name>
diff --git a/src/main/java/com/easypost/service/FedExRegistrationService.java b/src/main/java/com/easypost/service/FedExRegistrationService.java
index 3b92e220e..bf929afd6 100644
--- a/src/main/java/com/easypost/service/FedExRegistrationService.java
+++ b/src/main/java/com/easypost/service/FedExRegistrationService.java
@@ -46,12 +46,14 @@ public FedExAccountValidationResponse registerAddress(final String fedexAccountN
      *
      * @param fedexAccountNumber The FedEx account number.
      * @param pinMethodOption    The PIN delivery method: "SMS", "CALL", or "EMAIL".
+     * @param params             Map of parameters.
      * @return FedExRequestPinResponse object confirming PIN was sent.
      * @throws EasyPostException when the request fails.
      */
-    public FedExRequestPinResponse requestPin(final String fedexAccountNumber, final String pinMethodOption)
+    public FedExRequestPinResponse requestPin(final String fedexAccountNumber, final String pinMethodOption,
+            final Map<String, Object> params)
             throws EasyPostException {
-        Map<String, Object> wrappedParams = new HashMap<>();
+        Map<String, Object> wrappedParams = wrapPinValidation(params);
         Map<String, Object> pinMethodMap = new HashMap<>();
         pinMethodMap.put("option", pinMethodOption);
         wrappedParams.put("pin_method", pinMethodMap);
diff --git a/src/test/java/com/easypost/FedExRegistrationTest.java b/src/test/java/com/easypost/FedExRegistrationTest.java
index ff0de37a7..0237d44b3 100644
--- a/src/test/java/com/easypost/FedExRegistrationTest.java
+++ b/src/test/java/com/easypost/FedExRegistrationTest.java
@@ -94,8 +94,11 @@ public void testRequestPin() throws EasyPostException {
         String fedexAccountNumber = "123456789";
         Map<String, Object> pinMethodMap = new java.util.HashMap<>();
         pinMethodMap.put("option", "SMS");
+        Map<String, Object> easypostDetails = new java.util.HashMap<>();
+        easypostDetails.put("carrier_account_id", "ca_123");
         Map<String, Object> params = new java.util.HashMap<>();
         params.put("pin_method", pinMethodMap);
+        params.put("easypost_details", easypostDetails);
 
         String jsonResponse = "{\"message\":\"sent secured Pin\"}";
         FedExRequestPinResponse pinResponse = Constants.Http.GSON.fromJson(jsonResponse, FedExRequestPinResponse.class);
@@ -109,7 +112,7 @@ public void testRequestPin() throws EasyPostException {
                 vcr.client))
                 .thenReturn(pinResponse);
 
-        FedExRequestPinResponse response = vcr.client.fedexRegistration.requestPin(fedexAccountNumber, "SMS");
+        FedExRequestPinResponse response = vcr.client.fedexRegistration.requestPin(fedexAccountNumber, "SMS", params);
         assertEquals("sent secured Pin", response.getMessage());
     }