diff --git a/CHANGELOG.md b/CHANGELOG.md
index c1df382b6..3e8c7556b 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,9 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+### Fixed
+- Upgraded `curl`/`libcurl` in the Docker image to `8.20.0-r0` to address CVE-2026-7009. [#1450](https://github.com/sourcebot-dev/sourcebot/pull/1450)
+
 ## [5.1.1] - 2026-07-14
 
 - Add book a call button to sidebar. [#1441](https://github.com/sourcebot-dev/sourcebot/pull/1441)
diff --git a/Dockerfile b/Dockerfile
index 4a1b016c7..35864fbe1 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -165,8 +165,12 @@ ENV SOURCEBOT_LOG_LEVEL=info
 # Sourcebot collects anonymous usage data using [PostHog](https://posthog.com/). Uncomment this line to disable.
 # ENV SOURCEBOT_TELEMETRY_DISABLED=1
 
-# Configure dependencies
+# Configure dependencies.
+# `apk upgrade --no-cache` pulls patched versions of all base packages. curl and
+# libcurl are upgraded explicitly to ensure the image includes the fix for
+# CVE-2026-7009 (OCSP stapling certificate validation bypass, fixed in 8.20.0-r0).
 RUN apk add --no-cache git ca-certificates bind-tools tini jansson wget supervisor uuidgen curl perl jq openssl util-linux unzip && \
+    apk upgrade --no-cache curl libcurl && \
     apk upgrade --no-cache
 
 # Remove npm (unused — we use Yarn). The Node.js base image bundles npm