diff --git a/kubernetes/apps/ical-proxy/deployment.yaml b/kubernetes/apps/ical-proxy/deployment.yaml
index 4899a44a..5aea815b 100644
--- a/kubernetes/apps/ical-proxy/deployment.yaml
+++ b/kubernetes/apps/ical-proxy/deployment.yaml
@@ -43,12 +43,15 @@ spec:
           # resolving to private/loopback/link-local addresses are refused;
           # public redirects are still followed, up to 5) and a cap of 20
           # concurrent /proxy upstream fetches (over the cap: 429 +
-          # Retry-After). The summary_match/summary_replace parameters this
-          # deployment needs are unchanged.
+          # Retry-After). main-73b5d97 then raises the server WriteTimeout
+          # from 10s to 40s (the 30s upstream fetch timeout + 10s headroom),
+          # so a slow-but-legitimate upstream is no longer cut off before
+          # /proxy can answer. The summary_match/summary_replace parameters
+          # this deployment needs are unchanged.
           #
           # Bumping this is a manual, reviewed edit. The tag format is
           # main-<short-sha>, the first 7 characters of the main commit.
-          image: gitea.renner.uno/konairius/ical-proxy:main-4783abe
+          image: gitea.renner.uno/konairius/ical-proxy:main-73b5d97
           ports:
             - containerPort: 8080
               name: http