diff --git a/src/circleci/analytics_clj/core.clj b/src/circleci/analytics_clj/core.clj
index 0404bdc..944b5c4 100644
--- a/src/circleci/analytics_clj/core.clj
+++ b/src/circleci/analytics_clj/core.clj
@@ -19,7 +19,7 @@
   ([write-key]
    (initialize write-key nil))
 
-  ([write-key {:keys [client log endpoint user-agent network-executor callback]}]
+  ([write-key {:keys [client log endpoint upload-url user-agent network-executor callback]}]
    (.build (doto (Analytics/builder write-key)
              (cond-> (not (nil? client))
                (client* client))
@@ -30,6 +30,9 @@
              (cond-> (not (nil? endpoint))
                (endpoint* endpoint))
 
+             (cond-> (not (nil? upload-url))
+               (upload-url* upload-url))
+
              (cond-> (not (nil? user-agent))
                (user-agent* user-agent))
 
diff --git a/src/circleci/analytics_clj/external.clj b/src/circleci/analytics_clj/external.clj
index a40f5ae..4feaa88 100644
--- a/src/circleci/analytics_clj/external.clj
+++ b/src/circleci/analytics_clj/external.clj
@@ -15,6 +15,10 @@
   (doto analytics-builder
     (.endpoint endpoint)))
 
+(defn upload-url* [^com.segment.analytics.Analytics$Builder analytics-builder upload-url]
+  (doto analytics-builder
+    (.setUploadURL upload-url)))
+
 (defn user-agent* [^com.segment.analytics.Analytics$Builder analytics-builder user-agent]
   (doto analytics-builder
     (.userAgent user-agent)))