diff --git a/src/infra/heartbeat-runner.model-override.test.ts b/src/infra/heartbeat-runner.model-override.test.ts
index 35ad0888e6..7273356e8a 100644
--- a/src/infra/heartbeat-runner.model-override.test.ts
+++ b/src/infra/heartbeat-runner.model-override.test.ts
@@ -112,10 +112,12 @@ describe("runHeartbeatOnce – heartbeat model override", () => {
 
   it("passes heartbeatModelOverride from defaults heartbeat config", async () => {
     const replyOpts = await runDefaultsHeartbeat({ model: "ollama/llama3.2:1b" });
-    expect(replyOpts).toEqual({
-      isHeartbeat: true,
-      heartbeatModelOverride: "ollama/llama3.2:1b",
-    });
+    expect(replyOpts).toEqual(
+      expect.objectContaining({
+        isHeartbeat: true,
+        heartbeatModelOverride: "ollama/llama3.2:1b",
+      }),
+    );
   });
 
   it("passes per-agent heartbeat model override (merged with defaults)", async () => {
@@ -171,14 +173,20 @@ describe("runHeartbeatOnce – heartbeat model override", () => {
 
   it("does not pass heartbeatModelOverride when no heartbeat model is configured", async () => {
     const replyOpts = await runDefaultsHeartbeat({ model: undefined });
-    expect(replyOpts).toStrictEqual({ isHeartbeat: true });
+    expect(replyOpts).toEqual(
+      expect.objectContaining({
+        isHeartbeat: true,
+      }),
+    );
   });
 
   it("trims heartbeat model override before passing it downstream", async () => {
     const replyOpts = await runDefaultsHeartbeat({ model: "  ollama/llama3.2:1b  " });
-    expect(replyOpts).toEqual({
-      isHeartbeat: true,
-      heartbeatModelOverride: "ollama/llama3.2:1b",
-    });
+    expect(replyOpts).toEqual(
+      expect.objectContaining({
+        isHeartbeat: true,
+        heartbeatModelOverride: "ollama/llama3.2:1b",
+      }),
+    );
   });
 });
diff --git a/src/infra/heartbeat-runner.returns-default-unset.test.ts b/src/infra/heartbeat-runner.returns-default-unset.test.ts
index f8a76d952c..45fb3912b6 100644
--- a/src/infra/heartbeat-runner.returns-default-unset.test.ts
+++ b/src/infra/heartbeat-runner.returns-default-unset.test.ts
@@ -545,7 +545,7 @@ describe("runHeartbeatOnce", () => {
           Body: expect.stringMatching(/Ops check[\s\S]*Current time: /),
           SessionKey: sessionKey,
         }),
-        { isHeartbeat: true },
+        expect.objectContaining({ isHeartbeat: true }),
         cfg,
       );
     } finally {
@@ -622,7 +622,7 @@ describe("runHeartbeatOnce", () => {
       expect(sendWhatsApp).toHaveBeenCalledWith("+1555", "Final alert", expect.any(Object));
       expect(replySpy).toHaveBeenCalledWith(
         expect.objectContaining({ SessionKey: sessionKey }),
-        { isHeartbeat: true },
+        expect.objectContaining({ isHeartbeat: true }),
         cfg,
       );
     } finally {
@@ -700,7 +700,7 @@ describe("runHeartbeatOnce", () => {
       expect(sendWhatsApp).toHaveBeenCalledWith(groupId, "Group alert", expect.any(Object));
       expect(replySpy).toHaveBeenCalledWith(
         expect.objectContaining({ SessionKey: groupSessionKey }),
-        { isHeartbeat: true },
+        expect.objectContaining({ isHeartbeat: true }),
         cfg,
       );
     } finally {