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 4a176ed0b164..6a3b23382eed 100644
--- a/airbyte-config/init/src/main/resources/seed/source_definitions.yaml
+++ b/airbyte-config/init/src/main/resources/seed/source_definitions.yaml
@@ -1507,7 +1507,7 @@
 - name: Slack
   sourceDefinitionId: c2281cee-86f9-4a86-bb48-d23286b4c7bd
   dockerRepository: airbyte/source-slack
-  dockerImageTag: 0.1.19
+  dockerImageTag: 0.1.20
   documentationUrl: https://docs.airbyte.com/integrations/sources/slack
   icon: slack.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 b3c23c4bff69..897e585856d0 100644
--- a/airbyte-config/init/src/main/resources/seed/source_specs.yaml
+++ b/airbyte-config/init/src/main/resources/seed/source_specs.yaml
@@ -13428,7 +13428,7 @@
     supportsNormalization: false
     supportsDBT: false
     supported_destination_sync_modes: []
-- dockerImage: "airbyte/source-slack:0.1.19"
+- dockerImage: "airbyte/source-slack:0.1.20"
   spec:
     documentationUrl: "https://docs.airbyte.com/integrations/sources/slack"
     connectionSpecification:
diff --git a/airbyte-integrations/connectors/source-slack/Dockerfile b/airbyte-integrations/connectors/source-slack/Dockerfile
index 4f8ffe9cb8af..a0ff6a254396 100644
--- a/airbyte-integrations/connectors/source-slack/Dockerfile
+++ b/airbyte-integrations/connectors/source-slack/Dockerfile
@@ -17,5 +17,5 @@ COPY main.py ./
 ENV AIRBYTE_ENTRYPOINT "python /airbyte/integration_code/main.py"
 ENTRYPOINT ["python", "/airbyte/integration_code/main.py"]
 
-LABEL io.airbyte.version=0.1.19
+LABEL io.airbyte.version=0.1.20
 LABEL io.airbyte.name=airbyte/source-slack
diff --git a/airbyte-integrations/connectors/source-slack/acceptance-test-config.yml b/airbyte-integrations/connectors/source-slack/acceptance-test-config.yml
index 76cc642d536d..f8784042a562 100644
--- a/airbyte-integrations/connectors/source-slack/acceptance-test-config.yml
+++ b/airbyte-integrations/connectors/source-slack/acceptance-test-config.yml
@@ -15,6 +15,8 @@ tests:
       status: "failed"
   discovery:
     - config_path: "secrets/config.json"
+      backward_compatibility_tests_config:
+        disable_for_version: "0.1.19"
   basic_read:
     - config_path: "secrets/config.json"
       configured_catalog_path: "integration_tests/full_refresh_catalog.json"
diff --git a/airbyte-integrations/connectors/source-slack/source_slack/schemas/channel_messages.json b/airbyte-integrations/connectors/source-slack/source_slack/schemas/channel_messages.json
index a0bf08d3f615..86974bc8be5f 100644
--- a/airbyte-integrations/connectors/source-slack/source_slack/schemas/channel_messages.json
+++ b/airbyte-integrations/connectors/source-slack/source_slack/schemas/channel_messages.json
@@ -38,7 +38,7 @@
           "type": ["null", "string"]
         },
         "updated": {
-          "type": ["null", "string"]
+          "type": ["null", "integer"]
         }
       },
       "type": ["null", "object"]
@@ -100,8 +100,7 @@
       "type": ["null", "boolean"]
     },
     "last_read": {
-      "type": ["null", "string"],
-      "format": "date-time"
+      "type": ["null", "string"]
     },
     "latest_reply": {
       "type": ["null", "string"]
diff --git a/docs/integrations/sources/slack.md b/docs/integrations/sources/slack.md
index 8323cd5bc688..ccf5b07af39d 100644
--- a/docs/integrations/sources/slack.md
+++ b/docs/integrations/sources/slack.md
@@ -136,6 +136,7 @@ It is recommended to sync required channels only, this can be done by specifying
 
 | Version | Date       | Pull Request                                             | Subject                                             |
 |:--------|:-----------|:---------------------------------------------------------|:----------------------------------------------------|
+| 0.1.20  | 2022-12-21 | [20767](https://github.com/airbytehq/airbyte/pull/20767) | Update schema                                       |
 | 0.1.19  | 2022-12-01 | [19970](https://github.com/airbytehq/airbyte/pull/19970) | Remove OAuth2.0 broken `refresh_token` support      |
 | 0.1.18  | 2022-09-28 | [17315](https://github.com/airbytehq/airbyte/pull/17315) | Always install latest version of Airbyte CDK        |
 | 0.1.17  | 2022-08-28 | [16085](https://github.com/airbytehq/airbyte/pull/16085) | Increase unit test coverage                         |