diff --git a/airbyte-config/init/src/main/resources/seed/source_definitions.yaml b/airbyte-config/init/src/main/resources/seed/source_definitions.yaml
index ec521297cec41..903358d5917bb 100644
--- a/airbyte-config/init/src/main/resources/seed/source_definitions.yaml
+++ b/airbyte-config/init/src/main/resources/seed/source_definitions.yaml
@@ -128,7 +128,7 @@
 - name: Bing Ads
   sourceDefinitionId: 47f25999-dd5e-4636-8c39-e7cea2453331
   dockerRepository: airbyte/source-bing-ads
-  dockerImageTag: 0.1.14
+  dockerImageTag: 0.1.15
   documentationUrl: https://docs.airbyte.io/integrations/sources/bing-ads
   icon: bingads.svg
   sourceType: api
diff --git a/airbyte-config/init/src/main/resources/seed/source_specs.yaml b/airbyte-config/init/src/main/resources/seed/source_specs.yaml
index a8cf007ede44f..493bdda454012 100644
--- a/airbyte-config/init/src/main/resources/seed/source_specs.yaml
+++ b/airbyte-config/init/src/main/resources/seed/source_specs.yaml
@@ -1460,7 +1460,7 @@
     - "overwrite"
     - "append"
     - "append_dedup"
-- dockerImage: "airbyte/source-bing-ads:0.1.14"
+- dockerImage: "airbyte/source-bing-ads:0.1.15"
   spec:
     documentationUrl: "https://docs.airbyte.io/integrations/sources/bing-ads"
     connectionSpecification:
diff --git a/airbyte-integrations/connectors/source-bing-ads/Dockerfile b/airbyte-integrations/connectors/source-bing-ads/Dockerfile
index 3c6bc2952b1ae..371e95cff23a1 100644
--- a/airbyte-integrations/connectors/source-bing-ads/Dockerfile
+++ b/airbyte-integrations/connectors/source-bing-ads/Dockerfile
@@ -12,5 +12,5 @@ RUN pip install .
 ENV AIRBYTE_ENTRYPOINT "python /airbyte/integration_code/main.py"
 ENTRYPOINT ["python", "/airbyte/integration_code/main.py"]
 
-LABEL io.airbyte.version=0.1.14
+LABEL io.airbyte.version=0.1.15
 LABEL io.airbyte.name=airbyte/source-bing-ads
diff --git a/airbyte-integrations/connectors/source-bing-ads/source_bing_ads/client.py b/airbyte-integrations/connectors/source-bing-ads/source_bing_ads/client.py
index 179610ce5ca59..e6193ca3ce0fd 100644
--- a/airbyte-integrations/connectors/source-bing-ads/source_bing_ads/client.py
+++ b/airbyte-integrations/connectors/source-bing-ads/source_bing_ads/client.py
@@ -71,7 +71,7 @@ def _get_auth_client(self, client_id: str, tenant_id: str, client_secret: str =
             auth_creds["client_secret"] = client_secret
         return OAuthWebAuthCodeGrant(**auth_creds)
 
-    @lru_cache(maxsize=None)
+    @lru_cache(maxsize=4)
     def _get_auth_data(self, customer_id: str = None, account_id: Optional[str] = None) -> AuthorizationData:
         return AuthorizationData(
             account_id=account_id,
@@ -147,7 +147,7 @@ def _request(
 
         return getattr(service, operation_name)(**params)
 
-    @lru_cache(maxsize=None)
+    @lru_cache(maxsize=4)
     def get_service(
         self,
         service_name: str,
@@ -161,7 +161,7 @@ def get_service(
             environment=self.environment,
         )
 
-    @lru_cache(maxsize=16)
+    @lru_cache(maxsize=4)
     def _get_reporting_service(
         self,
         customer_id: Optional[str] = None,
diff --git a/docs/integrations/sources/bing-ads.md b/docs/integrations/sources/bing-ads.md
index a9e43515f8acb..7d2b3200431ac 100644
--- a/docs/integrations/sources/bing-ads.md
+++ b/docs/integrations/sources/bing-ads.md
@@ -96,6 +96,7 @@ The Bing Ads API limits the number of requests for all Microsoft Advertising cli
 ## Changelog
 | Version | Date       | Pull Request                                                                                                                     | Subject                                                                                                                    |
 | :------ | :--------- | :------------------------------------------------------------------------------------------------------------------------------- | :------------------------------------------------------------------------------------------------------------------------- |
+| 0.1.15  | 2022-10-03 | [17505](https://github.com/airbytehq/airbyte/pull/17505)                                                                         | Fix: limit cache size for ServiceClient instances                                                                          |
 | 0.1.14  | 2022-09-29 | [17403](https://github.com/airbytehq/airbyte/pull/17403)                                                                         | Fix: limit cache size for ReportingServiceManager instances                                                                |
 | 0.1.13  | 2022-09-29 | [17386](https://github.com/airbytehq/airbyte/pull/17386)                                                                         | Migrate to per-stream states.                                                                                              |
 | 0.1.12  | 2022-09-05 | [16335](https://github.com/airbytehq/airbyte/pull/16335)                                                                         | Added backoff for socket.timeout                                                                                           |