diff --git a/osv/ecosystems/_ecosystems.py b/osv/ecosystems/_ecosystems.py
index 1275090349c..d3ba98be73a 100644
--- a/osv/ecosystems/_ecosystems.py
+++ b/osv/ecosystems/_ecosystems.py
@@ -42,6 +42,7 @@
     'CRAN': CRAN,
     'crates.io': SemverEcosystem,
     'Debian': Debian,
+    'Docker Hardened Images': SemverEcosystem,
     'Echo': DPKG,
     'GHC': GHC,
     'Go': SemverEcosystem,
diff --git a/osv/purl_helpers.py b/osv/purl_helpers.py
index b5e6741c2ef..61e59e05712 100644
--- a/osv/purl_helpers.py
+++ b/osv/purl_helpers.py
@@ -48,6 +48,8 @@
         EcosystemPURL('deb', 'echo'),
     'Debian':
         EcosystemPURL('deb', 'debian'),
+    'Docker Hardened Images':
+        EcosystemPURL('dhi', None),
     # GHC
     # GIT
     # GitHub Actions