diff --git a/coveralls/api.py b/coveralls/api.py
index 73d51166..a05de8cd 100644
--- a/coveralls/api.py
+++ b/coveralls/api.py
@@ -118,9 +118,10 @@ def load_config_from_travis():
 
     @staticmethod
     def load_config_from_semaphore():
-        job = os.environ.get('SEMAPHORE_BUILD_NUMBER')
-        pr = os.environ.get('PULL_REQUEST_NUMBER')
-        return 'semaphore-ci', job, None, pr
+        job = os.environ.get('SEMAPHORE_CURRENT_JOB')
+        number = os.environ.get('SEMAPHORE_BUILD_NUMBER')
+        pr = os.environ.get('SEMAPHORE_BRANCH_ID')
+        return 'semaphore-ci', job, number, pr
 
     @staticmethod
     def load_config_from_unknown():
diff --git a/tests/api/configuration_test.py b/tests/api/configuration_test.py
index 985bc925..71bb295e 100644
--- a/tests/api/configuration_test.py
+++ b/tests/api/configuration_test.py
@@ -173,12 +173,14 @@ def test_travis_no_config(self):
     @mock.patch.dict(os.environ,
                      {'SEMAPHORE': 'True',
                       'SEMAPHORE_BUILD_NUMBER': '888',
-                      'PULL_REQUEST_NUMBER': '9999'},
+                      'SEMAPHORE_CURRENT_JOB': '1',
+                      'SEMAPHORE_BRANCH_ID': '9999'},
                      clear=True)
     def test_semaphore_no_config(self):
         cover = Coveralls(repo_token='xxx')
         assert cover.config['service_name'] == 'semaphore-ci'
-        assert cover.config['service_job_id'] == '888'
+        assert cover.config['service_job_id'] == '1'
+        assert cover.config['service_number'] == '888'
         assert cover.config['service_pull_request'] == '9999'
 
     @mock.patch.dict(os.environ, {'COVERALLS_SERVICE_NAME': 'xxx'}, clear=True)