diff --git a/.github/workflows/deploy-web.yaml b/.github/workflows/deploy-web.yaml
index 96502f69..33e63955 100644
--- a/.github/workflows/deploy-web.yaml
+++ b/.github/workflows/deploy-web.yaml
@@ -145,6 +145,14 @@ jobs:
           VITE_SENTRY_RELEASE: ${{ steps.commit.outputs.sha }}
         run: |
           set -euo pipefail
+          # vars.VITE_SENTRY_DSN is unset today. An empty env value would
+          # override .env.production and disable Sentry (Vite does not let
+          # .env overwrite an existing variable).
+          if [ -n "${VITE_SENTRY_DSN:-}" ]; then
+            export VITE_SENTRY_DSN
+          else
+            unset VITE_SENTRY_DSN
+          fi
           case "${TARGET_ENVIRONMENT}" in
             dev)
               export VITE_API_URL="https://api.dev.seahaven.com/api"