diff --git a/CHANGELOG.md b/CHANGELOG.md
index 131d227b..0262a86d 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -9,6 +9,7 @@
 * [#473](https://github.com/slack-ruby-client/pulls/473): Update API from [slack-api-ref@a29b520](https://github.com/slack-ruby/slack-api-ref/commit/a29b520) - [@slack-ruby-ci-bot](https://github.com/apps/slack-ruby-ci-bot).
 * [#474](https://github.com/slack-ruby-client/pulls/474): Update API from [slack-api-ref@629967e](https://github.com/slack-ruby/slack-api-ref/commit/629967e) - [@slack-ruby-ci-bot](https://github.com/apps/slack-ruby-ci-bot).
 * [#475](https://github.com/slack-ruby-client/pulls/475): Update API from [slack-api-ref@977dad5](https://github.com/slack-ruby/slack-api-ref/commit/977dad5) - [@slack-ruby-ci-bot](https://github.com/apps/slack-ruby-ci-bot).
+* [#476](https://github.com/slack-ruby-client/pulls/476): Update API from [slack-api-ref@d0b2989](https://github.com/slack-ruby/slack-api-ref/commit/d0b2989) - [@slack-ruby-ci-bot](https://github.com/apps/slack-ruby-ci-bot).
 * Your contribution here.
 
 ### 2.1.0 (2023/03/17)
diff --git a/bin/commands/admin_apps_approved.rb b/bin/commands/admin_apps_approved.rb
index 088b5d23..c427cdc9 100644
--- a/bin/commands/admin_apps_approved.rb
+++ b/bin/commands/admin_apps_approved.rb
@@ -9,7 +9,7 @@ class App
         g.desc 'List approved apps for an org or workspace.'
         g.long_desc %( List approved apps for an org or workspace. )
         g.command 'list' do |c|
-          c.flag 'certified', desc: 'Only return certified apps when true, return only non-certified apps when false.'
+          c.flag 'certified', desc: 'Limit the results to only include certified apps. When false, no certified apps will appear in the result.'
           c.flag 'cursor', desc: 'Set cursor to next_cursor returned by the previous call to list items in the next page.'
           c.flag 'enterprise_id', desc: '.'
           c.flag 'limit', desc: 'The maximum number of items to return. Must be between 1 - 1000 both inclusive.'
diff --git a/bin/commands/admin_apps_requests.rb b/bin/commands/admin_apps_requests.rb
index e51c6db0..b0087cd5 100644
--- a/bin/commands/admin_apps_requests.rb
+++ b/bin/commands/admin_apps_requests.rb
@@ -20,7 +20,7 @@ class App
         g.desc 'List app requests for a team/workspace.'
         g.long_desc %( List app requests for a team/workspace. )
         g.command 'list' do |c|
-          c.flag 'certified', desc: 'Limit the results to only include certified apps. When false, no certified apps will appear in the result.'
+          c.flag 'certified', desc: 'Include requests for certified apps.'
           c.flag 'cursor', desc: 'Set cursor to next_cursor returned by the previous call to list items in the next page.'
           c.flag 'enterprise_id', desc: '.'
           c.flag 'limit', desc: 'The maximum number of items to return. Must be between 1 - 1000 both inclusive.'
diff --git a/bin/commands/admin_apps_restricted.rb b/bin/commands/admin_apps_restricted.rb
index 72bf81e0..b9ec76a3 100644
--- a/bin/commands/admin_apps_restricted.rb
+++ b/bin/commands/admin_apps_restricted.rb
@@ -9,7 +9,7 @@ class App
         g.desc 'List restricted apps for an org or workspace.'
         g.long_desc %( List restricted apps for an org or workspace. )
         g.command 'list' do |c|
-          c.flag 'certified', desc: 'Only return certified apps when true, return only non-certified apps when false.'
+          c.flag 'certified', desc: 'Limit the results to only include certified apps. When false, no certified apps will appear in the result.'
           c.flag 'cursor', desc: 'Set cursor to next_cursor returned by the previous call to list items in the next page.'
           c.flag 'enterprise_id', desc: '.'
           c.flag 'limit', desc: 'The maximum number of items to return. Must be between 1 - 1000 both inclusive.'
diff --git a/lib/slack/web/api/endpoints/admin_apps_approved.rb b/lib/slack/web/api/endpoints/admin_apps_approved.rb
index 914138d2..d73d98b9 100644
--- a/lib/slack/web/api/endpoints/admin_apps_approved.rb
+++ b/lib/slack/web/api/endpoints/admin_apps_approved.rb
@@ -10,7 +10,7 @@ module AdminAppsApproved
           # List approved apps for an org or workspace.
           #
           # @option options [boolean] :certified
-          #   Only return certified apps when true, return only non-certified apps when false.
+          #   Limit the results to only include certified apps. When false, no certified apps will appear in the result.
           # @option options [string] :cursor
           #   Set cursor to next_cursor returned by the previous call to list items in the next page.
           # @option options [Object] :enterprise_id
diff --git a/lib/slack/web/api/endpoints/admin_apps_requests.rb b/lib/slack/web/api/endpoints/admin_apps_requests.rb
index 20a7173c..10254858 100644
--- a/lib/slack/web/api/endpoints/admin_apps_requests.rb
+++ b/lib/slack/web/api/endpoints/admin_apps_requests.rb
@@ -26,7 +26,7 @@ def admin_apps_requests_cancel(options = {})
           # List app requests for a team/workspace.
           #
           # @option options [boolean] :certified
-          #   Limit the results to only include certified apps. When false, no certified apps will appear in the result.
+          #   Include requests for certified apps.
           # @option options [string] :cursor
           #   Set cursor to next_cursor returned by the previous call to list items in the next page.
           # @option options [Object] :enterprise_id
diff --git a/lib/slack/web/api/endpoints/admin_apps_restricted.rb b/lib/slack/web/api/endpoints/admin_apps_restricted.rb
index 63094eb5..1b72a186 100644
--- a/lib/slack/web/api/endpoints/admin_apps_restricted.rb
+++ b/lib/slack/web/api/endpoints/admin_apps_restricted.rb
@@ -10,7 +10,7 @@ module AdminAppsRestricted
           # List restricted apps for an org or workspace.
           #
           # @option options [boolean] :certified
-          #   Only return certified apps when true, return only non-certified apps when false.
+          #   Limit the results to only include certified apps. When false, no certified apps will appear in the result.
           # @option options [string] :cursor
           #   Set cursor to next_cursor returned by the previous call to list items in the next page.
           # @option options [Object] :enterprise_id
diff --git a/lib/slack/web/api/errors.rb b/lib/slack/web/api/errors.rb
index de602d41..9be897c9 100644
--- a/lib/slack/web/api/errors.rb
+++ b/lib/slack/web/api/errors.rb
@@ -602,6 +602,7 @@ class UsersListNotSupplied < SlackError; end
         class UsersNotFound < SlackError; end
         class ValidationErrors < SlackError; end
         class ViewTooLarge < SlackError; end
+        class WorkflowsExportCsvNotEnabled < SlackError; end
 
         ERROR_CLASSES = {
           'access_denied' => AccessDenied,
@@ -1201,6 +1202,7 @@ class ViewTooLarge < SlackError; end
           'users_not_found' => UsersNotFound,
           'validation_errors' => ValidationErrors,
           'view_too_large' => ViewTooLarge,
+          'workflows_export_csv_not_enabled' => WorkflowsExportCsvNotEnabled,
         }.freeze
       end
     end
diff --git a/lib/slack/web/api/slack-api-ref b/lib/slack/web/api/slack-api-ref
index d0b2989a..d7970554 160000
--- a/lib/slack/web/api/slack-api-ref
+++ b/lib/slack/web/api/slack-api-ref
@@ -1 +1 @@
-Subproject commit d0b2989a10b0e4f7dba2c284ce690e078211bd05
+Subproject commit d7970554b32869a586921e7072b64ec37ee47092