diff --git a/ReleaseNotes.md b/ReleaseNotes.md
index e69a8019..61526991 100644
--- a/ReleaseNotes.md
+++ b/ReleaseNotes.md
@@ -74,6 +74,10 @@
  * [JENKINS-56585][jissue-56585]
  
    Change request method of `QuietDown()` to POST
+ 
+ * [JENKINS-48782][jissue-48782]
+   
+   Added constructors with custom `ObjectMapper`
 
 
 ## Release 0.3.8
diff --git a/jenkins-client/src/main/java/com/offbytwo/jenkins/client/JenkinsHttpClient.java b/jenkins-client/src/main/java/com/offbytwo/jenkins/client/JenkinsHttpClient.java
index 4eadc5c9..8cccebfd 100755
--- a/jenkins-client/src/main/java/com/offbytwo/jenkins/client/JenkinsHttpClient.java
+++ b/jenkins-client/src/main/java/com/offbytwo/jenkins/client/JenkinsHttpClient.java
@@ -79,12 +79,23 @@ public class JenkinsHttpClient implements JenkinsHttpConnection {
      * @param client Configured CloseableHttpClient to be used
      */
     public JenkinsHttpClient(URI uri, CloseableHttpClient client) {
+        this(uri, client, getDefaultMapper());
+    }
+
+    /**
+     * Create an unauthenticated Jenkins HTTP client
+     *
+     * @param uri Location of the jenkins server (ex. http://localhost:8080)
+     * @param client Configured CloseableHttpClient to be used
+     * @param objectMapper Jackson object mapper
+     */
+    public JenkinsHttpClient(URI uri, CloseableHttpClient client, ObjectMapper objectMapper) {
         this.context = uri.getPath();
         if (!context.endsWith("/")) {
             context += "/";
         }
         this.uri = uri;
-        this.mapper = getDefaultMapper();
+        this.mapper = objectMapper;
         this.client = client;
         this.httpResponseValidator = new HttpResponseValidator();
         // this.contentExtractor = new HttpResponseContentExtractor();
@@ -102,6 +113,17 @@ public JenkinsHttpClient(URI uri, HttpClientBuilder builder) {
         this(uri, builder.build());
     }
 
+    /**
+     * Create an unauthenticated Jenkins HTTP client
+     *
+     * @param uri Location of the jenkins server (ex. http://localhost:8080)
+     * @param builder Configured HttpClientBuilder to be used
+     * @param objectMapper Jackson object mapper
+     */
+    public JenkinsHttpClient(URI uri, HttpClientBuilder builder, ObjectMapper objectMapper) {
+        this(uri, builder.build(), objectMapper);
+    }
+
     /**
      * Create an unauthenticated Jenkins HTTP client
      *
@@ -111,6 +133,16 @@ public JenkinsHttpClient(URI uri) {
         this(uri, HttpClientBuilder.create());
     }
 
+    /**
+     * Create an unauthenticated Jenkins HTTP client
+     *
+     * @param uri Location of the jenkins server (ex. http://localhost:8080)
+     * @param objectMapper Jackson object mapper
+     */
+    public JenkinsHttpClient(URI uri, ObjectMapper objectMapper) {
+        this(uri, HttpClientBuilder.create(), objectMapper);
+    }
+
     /**
      * Create an authenticated Jenkins HTTP client
      *
@@ -122,6 +154,18 @@ public JenkinsHttpClient(URI uri, String username, String password) {
         this(uri, HttpClientBuilder.create(), username, password);
     }
 
+    /**
+     * Create an authenticated Jenkins HTTP client
+     *
+     * @param uri Location of the jenkins server (ex. http://localhost:8080)
+     * @param username Username to use when connecting
+     * @param password Password or auth token to use when connecting
+     * @param objectMapper Jackson object mapper
+     */
+    public JenkinsHttpClient(URI uri, String username, String password, ObjectMapper objectMapper) {
+        this(uri, HttpClientBuilder.create(), username, password, objectMapper);
+    }
+
     /**
      * Create an authenticated Jenkins HTTP client
      *
@@ -131,7 +175,20 @@ public JenkinsHttpClient(URI uri, String username, String password) {
      * @param password Password or auth token to use when connecting
      */
     public JenkinsHttpClient(URI uri, HttpClientBuilder builder, String username, String password) {
-        this(uri, addAuthentication(builder, uri, username, password));
+        this(uri, builder, username, password, getDefaultMapper());
+    }
+
+    /**
+     * Create an authenticated Jenkins HTTP client
+     *
+     * @param uri Location of the jenkins server (ex. http://localhost:8080)
+     * @param builder Configured HttpClientBuilder to be used
+     * @param username Username to use when connecting
+     * @param password Password or auth token to use when connecting
+     * @param objectMapper Jackson object mapper
+     */
+    public JenkinsHttpClient(URI uri, HttpClientBuilder builder, String username, String password, ObjectMapper objectMapper) {
+        this(uri, addAuthentication(builder, uri, username, password), objectMapper);
         if (isNotBlank(username)) {
             localContext = new BasicHttpContext();
             localContext.setAttribute("preemptive-auth", new BasicScheme());
@@ -445,7 +502,7 @@ public void close() {
         }
     }
 
-    
+
     /**
      * Add authentication to supplied builder.
      * @param builder the builder to configure
@@ -454,7 +511,7 @@ public void close() {
      * @param password the password
      * @return the passed in builder
      */
-    protected static HttpClientBuilder addAuthentication(final HttpClientBuilder builder, 
+    protected static HttpClientBuilder addAuthentication(final HttpClientBuilder builder,
             final URI uri, final String username,
             String password) {
         if (isNotBlank(username)) {
@@ -469,7 +526,7 @@ protected static HttpClientBuilder addAuthentication(final HttpClientBuilder bui
         return builder;
     }
 
-    
+
     /**
      * Get the local context.
      * @return context
@@ -478,7 +535,7 @@ protected HttpContext getLocalContext() {
         return localContext;
     }
 
-    
+
     /**
      * Set the local context.
      * @param localContext the context
@@ -487,10 +544,10 @@ protected void setLocalContext(final HttpContext localContext) {
         this.localContext = localContext;
     }
 
-    
-    
-    
-    
+
+
+
+
     private <T extends BaseModel> T objectFromResponse(Class<T> cls, HttpResponse response) throws IOException {
         InputStream content = response.getEntity().getContent();
         byte[] bytes = IOUtils.toByteArray(content);
@@ -501,7 +558,7 @@ private <T extends BaseModel> T objectFromResponse(Class<T> cls, HttpResponse re
         return result;
     }
 
-    private ObjectMapper getDefaultMapper() {
+    private static ObjectMapper getDefaultMapper() {
         ObjectMapper mapper = new ObjectMapper();
         mapper.disable(FAIL_ON_UNKNOWN_PROPERTIES);
         return mapper;