diff --git a/changelog.d/20231120_114120_nedbat_from_github_label_279.rst b/changelog.d/20231120_114120_nedbat_from_github_label_279.rst
new file mode 100644
index 00000000..6fb258ec
--- /dev/null
+++ b/changelog.d/20231120_114120_nedbat_from_github_label_279.rst
@@ -0,0 +1,6 @@
+.. A new scriv changelog fragment.
+
+- Now issues created in Jira will have a label of "from-GitHub" on them. Closes
+  `issue 279`_.
+
+.. _issue 279: https://github.com/openedx/openedx-webhooks/issues/279
diff --git a/docs/details.rst b/docs/details.rst
index df9958c5..dcf8253e 100644
--- a/docs/details.rst
+++ b/docs/details.rst
@@ -128,3 +128,5 @@ bot will create a Jira issue in the Jira server with the "xyz" nickname.
 
 Each Jira server can specify a mapping of repos to other Jira details such as
 the Jira project for the issue, and the issue type to create.
+
+Jira issues created this way will have a "from-GitHub" Jira label applied.
diff --git a/openedx_webhooks/tasks/pr_tracking.py b/openedx_webhooks/tasks/pr_tracking.py
index d7ed237c..b7aa2c04 100644
--- a/openedx_webhooks/tasks/pr_tracking.py
+++ b/openedx_webhooks/tasks/pr_tracking.py
@@ -138,8 +138,6 @@ class PrDesiredInfo:
     # don't need to force a new status, but can leave the existing status.
     jira_status: Optional[str] = None
 
-    jira_labels: Set[str] = field(default_factory=set)
-
     # The bot-controlled labels we want to on the pull request.
     # See labels.py:CATEGORY_LABELS
     github_labels: Set[str] = field(default_factory=set)
@@ -411,7 +409,7 @@ def _make_jira_issue(self, jira_nick) -> None:
             issuetype=issuetype,
             summary=self.desired.jira_title,
             description=self.desired.jira_description,
-            labels=list(self.desired.jira_labels),
+            labels=["from-GitHub"],
         )
 
         jira_id = JiraId(jira_nick, issue_data["key"])
diff --git a/tests/fake_jira.py b/tests/fake_jira.py
index efd555ef..c0e99170 100644
--- a/tests/fake_jira.py
+++ b/tests/fake_jira.py
@@ -2,6 +2,7 @@
 
 import dataclasses
 import itertools
+import re
 from dataclasses import dataclass, field
 from typing import Dict, Optional, Set
 
@@ -26,6 +27,15 @@ class Issue:
     summary: Optional[str] = None
     labels: Set[str] = field(default_factory=set)
 
+    def __post_init__(self) -> None:
+        # Jira labels can't have spaces in them. Check that they are only
+        # letters, numbers, dashes.
+        for label in self.labels:
+            if re.search(r"[^a-zA-Z0-9-]", label):
+                raise ValueError(f"Label {label!r} has invalid characters")
+            if len(label) < 3:
+                raise ValueError(f"Label {label!r} is too short")
+
     def as_json(self) -> Dict:
         return {
             "key": self.key,
diff --git a/tests/test_fake_jira.py b/tests/test_fake_jira.py
index eec14c0a..e79f0344 100644
--- a/tests/test_fake_jira.py
+++ b/tests/test_fake_jira.py
@@ -1,5 +1,6 @@
 """Tests of FakeJira."""
 
+import pytest
 import requests
 
 
@@ -10,7 +11,7 @@ class TestIssues:
     Tests of the correct behavior of issuees.
     """
     def test_get_issue(self, fake_jira):
-        fake_jira.make_issue(key="HELLO-123", summary="This is a bad bug!")
+        fake_jira.make_issue(key="HELLO-123", summary="This is a bad bug!", labels=["bad-bug"])
         resp = requests.get("https://test.atlassian.net/rest/api/2/issue/HELLO-123")
         assert resp.status_code == 200
         issue = resp.json()
@@ -74,3 +75,9 @@ class TestBadRequests:
     def test_no_such_put(self, fake_jira):
         resp = requests.put("https://test.atlassian.net/rest/api/2/issue/XYZ-999")
         assert resp.status_code == 404
+
+    def test_bad_label(self, fake_jira):
+        with pytest.raises(ValueError, match="Label 'a bug' has invalid characters"):
+            fake_jira.make_issue(key="HELLO-123", summary="a bug!", labels=["a bug"])
+        with pytest.raises(ValueError, match="Label 'a' is too short"):
+            fake_jira.make_issue(key="HELLO-123", summary="a bug!", labels="a bug")
diff --git a/tests/test_pull_request_opened.py b/tests/test_pull_request_opened.py
index aba5eed2..243534d9 100644
--- a/tests/test_pull_request_opened.py
+++ b/tests/test_pull_request_opened.py
@@ -370,6 +370,7 @@ def test_jira_labelling(fake_github, fake_jira, fake_jira2):
         Line2
         """
     )
+    assert jira_issue.labels == {"from-GitHub"}
 
     # Processing the pull request again won't make another issue.
     result = pull_request_changed(pr.as_json())