diff --git a/CHANGELOG.md b/CHANGELOG.md
index 8a8356ff..daeda2c1 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -9,6 +9,7 @@ published version with a date and open a fresh empty `[Unreleased]` above it.
 
 ### Added
 
+- `@relayfile/adapter-github` and the core GitHub mapping now declare `check_run` and `issue_comment` webhook keys, so consumers that read the mapping's `webhooks:` block can subscribe to CI check completions and issue/PR conversation comments.
 - `@relayfile/adapter-github` now exports a cursor-resumable pull-index convergence primitive that backfills `headRef` with one GitHub list request per invocation and no per-record metadata, file, or diff fetches.
 - `@relayfile/adapter-linear` now materializes `/linear/issues/by-project/<project-id>/<identifier>.json` aliases so project-scoped consumers can avoid mounting the full issue tree. The path mapper and generated `LAYOUT.md` contract expose the new lookup; existing mounts must resync to materialize and discover it.
 - `@relayfile/adapter-ramp` now provides read-only Ramp finance materialization with canonical bill, purchase-order, item-receipt, vendor-agreement, transaction, reimbursement, receipt, vendor, transfer, repayment, dimension, and accounting paths; stable indexes and aliases; a generated `LAYOUT.md` contract; Hookdeck-aware inbound declarations; webhook normalization and signature verification; and digest-visible lifecycle classification. Existing consumers must resync to materialize and discover the new canonical paths and layout contract.
diff --git a/packages/core/mappings/github.mapping.yaml b/packages/core/mappings/github.mapping.yaml
index 763c6bb6..a636161c 100644
--- a/packages/core/mappings/github.mapping.yaml
+++ b/packages/core/mappings/github.mapping.yaml
@@ -18,6 +18,21 @@ webhooks:
     path: /github/repos/{{repository.owner.login}}/{{repository.name}}/commits/{{head_commit.id}}/metadata.json
   issues:
     path: /github/repos/{{repository.owner.login}}/{{repository.name}}/issues/{{issue.number}}/metadata.json
+  issue_comment:
+    path: /github/repos/{{repository.owner.login}}/{{repository.name}}/issues/{{issue.number}}/comments/{{comment.id}}/meta.json
+    extract:
+      - action
+      - issue.number
+      - comment.id
+  check_run:
+    path: /github/repos/{{repository.owner.login}}/{{repository.name}}/checks/{{check_run.id}}.json
+    extract:
+      - action
+      - check_run.id
+      - check_run.name
+      - check_run.status
+      - check_run.conclusion
+      - check_run.head_sha
 resources:
   pull_request:
     endpoint: GET /repos/{owner}/{repo}/pulls/{pull_number}
diff --git a/packages/github/github.mapping.yaml b/packages/github/github.mapping.yaml
index 169f2423..f2b51aed 100644
--- a/packages/github/github.mapping.yaml
+++ b/packages/github/github.mapping.yaml
@@ -24,6 +24,13 @@ webhooks:
     path: /github/repos/{{repository.owner.login}}/{{repository.name}}/pulls/{{pull_request.number}}/comments/{{comment.id}}.json
   pull_request_review_thread.resolved:
     path: /github/repos/{{repository.owner.login}}/{{repository.name}}/pulls/{{pull_request.number}}/review-threads/{{thread.id}}.json
+  issue_comment:
+    path: /github/repos/{{repository.owner.login}}/{{repository.name}}/issues/{{issue.number}}/comments/{{comment.id}}/meta.json
+    extract:
+      - action
+      - issue.number
+      - issue.title
+      - comment.id
   issue_comment.created:
     path: /github/repos/{{repository.owner.login}}/{{repository.name}}/issues/{{issue.number}}/comments/{{comment.id}}/meta.json
     extract:
@@ -31,6 +38,24 @@ webhooks:
       - issue.number
       - issue.title
       - comment.id
+  check_run:
+    path: /github/repos/{{repository.owner.login}}/{{repository.name}}/checks/{{check_run.id}}.json
+    extract:
+      - action
+      - check_run.id
+      - check_run.name
+      - check_run.status
+      - check_run.conclusion
+      - check_run.head_sha
+  check_run.completed:
+    path: /github/repos/{{repository.owner.login}}/{{repository.name}}/checks/{{check_run.id}}.json
+    extract:
+      - action
+      - check_run.id
+      - check_run.name
+      - check_run.status
+      - check_run.conclusion
+      - check_run.head_sha
   deployment_status.created:
     path: /github/repos/{{repository.owner.login}}/{{repository.name}}/deployments/{{deployment.id}}/statuses/{{deployment_status.id}}.json
     extract: