diff --git a/CHANGELOG.md b/CHANGELOG.md
index 731f975..08cba43 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -8,6 +8,12 @@ All notable changes to the `python-domino` library will be documented in this fi
 
 ### Changed
 
+## 1.4.3
+
+### Added
+
+Support environmentId and externalVolumeMountIds in app_publish
+
 ## 1.4.2
 
 ### Added
diff --git a/domino/_version.py b/domino/_version.py
index daa50c7..aa56ed4 100644
--- a/domino/_version.py
+++ b/domino/_version.py
@@ -1 +1 @@
-__version__ = "1.4.2"
+__version__ = "1.4.3"
diff --git a/domino/domino.py b/domino/domino.py
index 13d70ee..0609413 100644
--- a/domino/domino.py
+++ b/domino/domino.py
@@ -889,7 +889,7 @@ def collaborators_remove(self, username_or_email):
         return response
 
     # App functions
-    def app_publish(self, unpublishRunningApps=True, hardwareTierId=None):
+    def app_publish(self, unpublishRunningApps=True, hardwareTierId=None, environmentId=None, externalVolumeMountIds=None):
         if unpublishRunningApps:
             self.app_unpublish()
         app_id = self._app_id
@@ -897,7 +897,11 @@ def app_publish(self, unpublishRunningApps=True, hardwareTierId=None):
             # No App Exists creating one
             app_id = self.__app_create(hardware_tier_id=hardwareTierId)
         url = self._routes.app_start(app_id)
-        request = {"hardwareTierId": hardwareTierId}
+        request = {
+            "hardwareTierId": hardwareTierId,
+             "environmentId": environmentId,
+             "externalVolumeMountIds": externalVolumeMountIds
+        }
         response = self.request_manager.post(url, json=request)
         return response