diff --git a/.github/workflows/check-signed.yml b/.github/workflows/check-signed.yml
new file mode 100644
index 0000000..f110c78
--- /dev/null
+++ b/.github/workflows/check-signed.yml
@@ -0,0 +1,14 @@
+---
+name: Validate if commits in PR are signed
+on: pull_request
+
+jobs:
+  signed-commits-check:
+    runs-on: ubuntu-latest
+    steps:
+
+      - name: Check out code
+        uses: actions/checkout@v3.5.3
+
+      - name: Check signed commits in PR
+        uses: 1Password/check-signed-commits-action@v1
diff --git a/README.md b/README.md
index 6977252..a382802 100644
--- a/README.md
+++ b/README.md
@@ -30,7 +30,7 @@ List of awesome people offering their time **for free** to have a "coffee chat"
 
 ## Add yourself to this list
 
-**Do not modify `README.md` directly: it will be autogenerated**. To add your name to this list, you need to add another object to the `people` array in [people.json](https://github.com/fharper/coffeechat/blob/main/people.json) and send a pull request. See [schema.json](schema.json) for the information about the JSON schema.
+**Do not modify `README.md` directly: it will be autogenerated**. To add your name to this list, you need to add another object to the `people` array in [people.json](https://github.com/fharper/coffeechat/blob/main/people.json) and send a pull request. See [schema.json](schema.json) for the information about the JSON schema. Note that your commit need to be signed to ensure the authenticity of the person adding information here: more information on how to do that in the [GitHub documentation](https://docs.github.com/en/authentication/managing-commit-signature-verification/signing-commits).
 
 If you have no idea how all this works, you can simply send me your information by [email](mailto:hi@fred.dev), and I'll add you to the list myself with pleasure.
 
diff --git a/scripts/README-TEMPLATE.md b/scripts/README-TEMPLATE.md
index 9f5e5bb..ff21e2b 100644
--- a/scripts/README-TEMPLATE.md
+++ b/scripts/README-TEMPLATE.md
@@ -8,7 +8,7 @@ PLACEHOLDER
 
 ## Add yourself to this list
 
-**Do not modify `README.md` directly: it will be autogenerated**. To add your name to this list, you need to add another object to the `people` array in [people.json](https://github.com/fharper/coffeechat/blob/main/people.json) and send a pull request. See [schema.json](schema.json) for the information about the JSON schema.
+**Do not modify `README.md` directly: it will be autogenerated**. To add your name to this list, you need to add another object to the `people` array in [people.json](https://github.com/fharper/coffeechat/blob/main/people.json) and send a pull request. See [schema.json](schema.json) for the information about the JSON schema. Note that your commit need to be signed to ensure the authenticity of the person adding information here: more information on how to do that in the [GitHub documentation](https://docs.github.com/en/authentication/managing-commit-signature-verification/signing-commits).
 
 If you have no idea how all this works, you can simply send me your information by [email](mailto:hi@fred.dev), and I'll add you to the list myself with pleasure.