diff --git a/docker-compose.prod.yml b/docker-compose.prod.yml
index accbf34a..8528f650 100644
--- a/docker-compose.prod.yml
+++ b/docker-compose.prod.yml
@@ -32,7 +32,9 @@ services:
 
   redis:
     image: redis:7-alpine
-    command: redis-server --requirepass ${REDIS_PASSWORD} --maxmemory 256mb --maxmemory-policy allkeys-lru
+    # BullMQ requires `noeviction` — under memory pressure, allkeys-lru
+    # silently drops queue keys and jobs disappear. See post-audit fix F4.
+    command: redis-server --requirepass ${REDIS_PASSWORD} --maxmemory 256mb --maxmemory-policy noeviction
     volumes:
       - redisdata:/data
     healthcheck:
diff --git a/docker-compose.yml b/docker-compose.yml
index e96da941..9e894454 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -18,7 +18,9 @@ services:
 
   redis:
     image: redis:7-alpine
-    command: redis-server --requirepass ${REDIS_PASSWORD} --maxmemory 256mb --maxmemory-policy allkeys-lru
+    # BullMQ requires `noeviction` — under memory pressure, allkeys-lru
+    # silently drops queue keys and jobs disappear. See post-audit fix F4.
+    command: redis-server --requirepass ${REDIS_PASSWORD} --maxmemory 256mb --maxmemory-policy noeviction
     volumes:
       - redisdata:/data
     healthcheck:
diff --git a/src/lib/services/gdpr-export.service.ts b/src/lib/services/gdpr-export.service.ts
index 579ad0f1..c7f7b690 100644
--- a/src/lib/services/gdpr-export.service.ts
+++ b/src/lib/services/gdpr-export.service.ts
@@ -110,7 +110,9 @@ export async function requestGdprExport(input: RequestExportInput): Promise<Requ
       emailToClient: input.emailToClient,
       emailOverride: input.emailOverride ?? null,
     },
-    { jobId: `gdpr-export:${row.id}` },
+    // BullMQ 5.x rejects custom job IDs containing ':' (Redis-key collision).
+    // Dash-separator keeps the namespace + the UUID round-trip unambiguous.
+    { jobId: `gdpr-export-${row.id}` },
   );
 
   return { export: row };