diff --git a/collectoss/tasks/github/util/github_graphql_data_access.py b/collectoss/tasks/github/util/github_graphql_data_access.py
index 5b2bb9bfc..b1aad798f 100644
--- a/collectoss/tasks/github/util/github_graphql_data_access.py
+++ b/collectoss/tasks/github/util/github_graphql_data_access.py
@@ -5,6 +5,7 @@
 from keyman.KeyClient import KeyClient
 from collectoss.tasks.github.util.github_data_access import RatelimitException, NotAuthorizedException, ResourceGoneException
 from collectoss.util.keys import mask_key
+from collectoss.util.version import get_user_agent
 
 URL = "https://api.github.com/graphql"
 
@@ -83,7 +84,7 @@ def make_request(self, query, variables, timeout=40):
             if not self.key:
                 self.key = self.key_client.request()
 
-            headers = {"Authorization": f"token {self.key}"}
+            headers = {"Authorization": f"token {self.key}", "User-Agent": get_user_agent()}
 
 
             json_dict = {
diff --git a/collectoss/util/version.py b/collectoss/util/version.py
new file mode 100644
index 000000000..e7e4d195c
--- /dev/null
+++ b/collectoss/util/version.py
@@ -0,0 +1,25 @@
+# SPDX-License-Identifier: MIT
+from importlib.metadata import version, PackageNotFoundError
+
+_FALLBACK_VERSION = "unknown"
+_PACKAGE_NAME = "collectoss"
+
+
+def get_version() -> str:
+    """Return the installed version of CollectOSS.
+
+    Falls back to 'unknown' if the package metadata is not available
+    (e.g. running from source without installing).
+    """
+    try:
+        return version(_PACKAGE_NAME)
+    except PackageNotFoundError:
+        return _FALLBACK_VERSION
+
+
+def get_user_agent() -> str:
+    """Return the User-Agent string CollectOSS should send with API requests.
+
+    Format: CollectOSS/<version> (github:chaoss/collectoss; CHAOSS/Linux Foundation)
+    """
+    return f"CollectOSS/{get_version()} (github:chaoss/collectoss; CHAOSS/Linux Foundation)"