diff --git a/hip_data_tools/google/googleads.py b/hip_data_tools/google/googleads.py
index afffe60..4679a47 100644
--- a/hip_data_tools/google/googleads.py
+++ b/hip_data_tools/google/googleads.py
@@ -386,7 +386,7 @@ class GoogleAdsCustomerUtil(AdWordsDataReader):
     """
 
     def __init__(self, conn: GoogleAdsConnectionManager):
-        super().__init__(conn, service="CustomerService", version="v13")
+        super().__init__(conn, service="CustomerService", version="v11")
 
     def get_customers(self) -> List[dict]:
         """
@@ -416,7 +416,7 @@ class GoogleAdsClicksConversionUtil(GoogleAdsUtil):
     """
 
     def __init__(self, conn: GoogleAdsConnectionManager):
-        super().__init__(conn, type="ClickConversion", version="v13")
+        super().__init__(conn, type="ClickConversion", version="v11")
 
     def click_conversion(self, data):
         """
@@ -445,7 +445,7 @@ class GoogleAdsUploadClickConversionsRequestUtil(GoogleAdsUtil):
     """
 
     def __init__(self, conn: GoogleAdsConnectionManager):
-        super().__init__(conn, type="UploadClickConversionsRequest", version="v13")
+        super().__init__(conn, type="UploadClickConversionsRequest", version="v11")
 
     def upload_click_conversion(self, customer_id: str, click_conversion):
         """
@@ -470,7 +470,7 @@ class GoogleAdsConversionActionUtil(GoogleAdsUtil):
     """
 
     def __init__(self, conn: GoogleAdsConnectionManager):
-        super().__init__(conn, service="ConversionActionService", version="v13")
+        super().__init__(conn, service="ConversionActionService", version="v11")
 
     def get_conversion_action(self, customer_id: str, conversion_action_id: str):
         """
@@ -492,7 +492,7 @@ class GoogleAdsOfflineConversionUtil(GoogleAdsUtil):
     """
 
     def __init__(self, conn: GoogleAdsConnectionManager):
-        super().__init__(conn, service="ConversionUploadService", version="v13")
+        super().__init__(conn, service="ConversionUploadService", version="v11")
         self.required_fields = [
             "gclid",
             "conversion_action",
diff --git a/setup.py b/setup.py
index e4af180..19cf9d1 100644
--- a/setup.py
+++ b/setup.py
@@ -83,7 +83,7 @@ def run_tests(self):
         "oauth2client",
         "gspread",
         "googleads",
-        "google-ads==20.0.0",
+        "google-ads==18.0.0",
         "numpy",
         "mysql-connector-python>=8.0.11, <=8.0.29",
         "mysqlclient>=1.3.6,<=2.1",