diff --git a/apps/desktop/src/lib/redis/redisCommandTable.ts b/apps/desktop/src/lib/redis/redisCommandTable.ts
index 81656fd7bf..4fb2f18a23 100644
--- a/apps/desktop/src/lib/redis/redisCommandTable.ts
+++ b/apps/desktop/src/lib/redis/redisCommandTable.ts
@@ -217,6 +217,7 @@ const RAW_COMMANDS: Record<string, Spec> = {
   ZMSCORE: [-3, "zset"],
   ZPOPMAX: [-2, "zset", "confirm"],
   ZPOPMIN: [-2, "zset", "confirm"],
+  ZRANDMEMBER: [-2, "zset"],
   ZRANGE: [-4, "zset"],
   ZRANGEBYLEX: [-4, "zset"],
   ZRANGEBYSCORE: [-4, "zset"],
diff --git a/packages/app-tests/redisSyntaxDiagnostics.test.ts b/packages/app-tests/redisSyntaxDiagnostics.test.ts
index a047995041..21562bf39b 100644
--- a/packages/app-tests/redisSyntaxDiagnostics.test.ts
+++ b/packages/app-tests/redisSyntaxDiagnostics.test.ts
@@ -10,6 +10,14 @@ test("reports no diagnostics for read-only valid commands", () => {
   assert.deepEqual(messages("GET foo"), []);
   assert.deepEqual(messages("HGETALL k"), []);
   assert.deepEqual(messages("SCAN 0"), []);
+  assert.deepEqual(messages("ZRANDMEMBER leaderboard 2 WITHSCORES"), []);
+});
+
+test("recognizes set store commands as writes", () => {
+  const diags = buildRedisSyntaxDiagnostics("SDIFFSTORE destination source-a source-b");
+  assert.equal(diags.length, 1);
+  assert.equal(diags[0].severity, "warning");
+  assert.doesNotMatch(diags[0].message, /Unknown command/);
 });
 
 test("flags unknown command name", () => {