diff --git a/src/main/java/com/merge/api/MergeApiClientBuilder.java b/src/main/java/com/merge/api/MergeApiClientBuilder.java
index 005532bc..9ea465bd 100644
--- a/src/main/java/com/merge/api/MergeApiClientBuilder.java
+++ b/src/main/java/com/merge/api/MergeApiClientBuilder.java
@@ -5,6 +5,9 @@
 
 import com.merge.api.core.ClientOptions;
 import com.merge.api.core.Environment;
+import okhttp3.OkHttpClient;
+
+import java.util.function.Consumer;
 
 public final class MergeApiClientBuilder {
     private ClientOptions.Builder clientOptionsBuilder = ClientOptions.builder();
@@ -15,6 +18,8 @@ public final class MergeApiClientBuilder {
 
     private Environment environment = Environment.PRODUCTION;
 
+    private Consumer<OkHttpClient.Builder> okHttpConfigurer;
+
     /**
      * Sets apiKey
      */
@@ -41,6 +46,11 @@ public MergeApiClientBuilder url(String url) {
         return this;
     }
 
+    public MergeApiClientBuilder okHttpConfigurer(Consumer<OkHttpClient.Builder> okHttpConfigurer) {
+        this.okHttpConfigurer = okHttpConfigurer;
+        return this;
+    }
+
     public MergeApiClient build() {
         if (apiKey == null) {
             throw new RuntimeException("Please provide apiKey");
@@ -50,6 +60,9 @@ public MergeApiClient build() {
             this.clientOptionsBuilder.addHeader("X-Account-Token", this.accountToken);
         }
         clientOptionsBuilder.environment(this.environment);
+        if (okHttpConfigurer != null) {
+            clientOptionsBuilder.addOkHttpConfigurer(okHttpConfigurer);
+        }
         return new MergeApiClient(clientOptionsBuilder.build());
     }
 }
diff --git a/src/main/java/com/merge/api/core/ClientOptions.java b/src/main/java/com/merge/api/core/ClientOptions.java
index f6e4307f..a0d85f12 100644
--- a/src/main/java/com/merge/api/core/ClientOptions.java
+++ b/src/main/java/com/merge/api/core/ClientOptions.java
@@ -6,6 +6,7 @@
 import java.util.HashMap;
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
+import java.util.function.Consumer;
 import java.util.function.Supplier;
 import okhttp3.OkHttpClient;
 
@@ -76,6 +77,8 @@ public static Builder builder() {
     public static final class Builder {
         private Environment environment;
 
+        private Consumer<OkHttpClient.Builder> okHttpConfigurer;
+
         private final Map<String, String> headers = new HashMap<>();
 
         private final Map<String, Supplier<String>> headerSuppliers = new HashMap<>();
@@ -95,11 +98,20 @@ public Builder addHeader(String key, Supplier<String> value) {
             return this;
         }
 
+        public Builder addOkHttpConfigurer(Consumer<OkHttpClient.Builder> okHttpConfigurer) {
+            this.okHttpConfigurer = okHttpConfigurer;
+            return this;
+        }
+
         public ClientOptions build() {
-            OkHttpClient okhttpClient = new OkHttpClient.Builder()
-                    .addInterceptor(new RetryInterceptor(3))
-                    .build();
-            return new ClientOptions(environment, headers, headerSuppliers, okhttpClient);
+            OkHttpClient.Builder okHttpClientBuilder = new OkHttpClient.Builder()
+                    .addInterceptor(new RetryInterceptor(3));
+
+            if (okHttpConfigurer != null) {
+                okHttpConfigurer.accept(okHttpClientBuilder);
+            }
+
+            return new ClientOptions(environment, headers, headerSuppliers, okHttpClientBuilder.build());
         }
     }
 }