diff --git a/devel/views.py b/devel/views.py
index 7ef33362..0f1c8d15 100644
--- a/devel/views.py
+++ b/devel/views.py
@@ -280,7 +280,7 @@ def report(request, report_name, username=None):
         filtered = []
         packages = packages.filter(pgp_signature__isnull=False)
         for package in packages:
-            sig_date = package.signature.datetime.replace(tzinfo=pytz.utc)
+            sig_date = package.signature.creation_time.replace(tzinfo=pytz.utc)
             package.sig_date = sig_date.date()
             key_id = package.signature.key_id
             signer = finder.find_by_pgp_key(key_id)
diff --git a/templates/packages/details.html b/templates/packages/details.html
index 4ab55ef2..4cb6032e 100644
--- a/templates/packages/details.html
+++ b/templates/packages/details.html
@@ -165,7 +165,7 @@ <h4>Versions Elsewhere</h4>
             <td>{% with pkg.signer as signer %}{% if signer %}{% pgp_key_link pkg.signature.key_id signer.get_full_name %}{% else %}Unknown ({% pgp_key_link pkg.signature.key_id %}){% endif %}{% endwith %}</td>
         </tr><tr>
             <th>Signature Date:</th>
-            <td>{{ pkg.signature.datetime|date:"DATETIME_FORMAT" }} UTC</td>
+            <td>{{ pkg.signature.creation_time|date:"DATETIME_FORMAT" }} UTC</td>
         </tr>{% else %}<tr>
             <th>Signed By:</th>
             <td>Unsigned</td>