diff --git a/lib/index.js b/lib/index.js
index 6071263..fa4d0f2 100644
--- a/lib/index.js
+++ b/lib/index.js
@@ -2485,6 +2485,7 @@ class RTCPeerConnection extends SimpleEventTarget {
     this._iceConnectionState = "new";
     this._iceGatheringState = "new";
     this._signalingState = "stable";
+    this._lastDispatchedSignalingState = "stable";
     this._native = null;
     this._nativeCertificates = null;
   }
@@ -2805,8 +2806,7 @@ class RTCPeerConnection extends SimpleEventTarget {
           this.dispatchEvent(makeEvent("icegatheringstatechange"));
           this._iceTransport()?.dispatchEvent(makeEvent("gatheringstatechange"));
         }
-        if (previousState !== this._signalingState)
-          this.dispatchEvent(makeEvent("signalingstatechange"));
+        if (previousState !== this._signalingState) this._dispatchSignalingStateChange();
         await nextTask();
         if (this._suppressNextNativeSignalingState === "stable")
           this._suppressNextNativeSignalingState = null;
@@ -2829,8 +2829,7 @@ class RTCPeerConnection extends SimpleEventTarget {
         this._signalingState = "have-local-pranswer";
         this._refreshIceRole();
         this._updateSctpTransport();
-        if (previousState !== this._signalingState)
-          this.dispatchEvent(makeEvent("signalingstatechange"));
+        if (previousState !== this._signalingState) this._dispatchSignalingStateChange();
         await nextTask();
         return;
       }
@@ -2974,7 +2973,7 @@ class RTCPeerConnection extends SimpleEventTarget {
       this._clearNegotiationNeededIfDataMLineIsPresent();
       this._refreshIceRole();
       if (manuallyUpdatedSignalingState && previousSignalingState !== this._signalingState)
-        this.dispatchEvent(makeEvent("signalingstatechange"));
+        this._dispatchSignalingStateChange();
       if (appliedIceRestart) {
         if (previousIceGatheringState === "complete") this._queueSyntheticIceRestartGathering();
         this._clearIceRestartRequest();
@@ -3062,8 +3061,7 @@ class RTCPeerConnection extends SimpleEventTarget {
         this._signalingState = "have-remote-pranswer";
         this._refreshIceRole();
         this._updateSctpTransport();
-        if (previousState !== this._signalingState)
-          this.dispatchEvent(makeEvent("signalingstatechange"));
+        if (previousState !== this._signalingState) this._dispatchSignalingStateChange();
         await nextTask();
         return;
       }
@@ -3104,8 +3102,7 @@ class RTCPeerConnection extends SimpleEventTarget {
         this._signalingState = "stable";
         this._refreshIceRole();
         this._updateSctpTransport();
-        if (previousState !== this._signalingState)
-          this.dispatchEvent(makeEvent("signalingstatechange"));
+        if (previousState !== this._signalingState) this._dispatchSignalingStateChange();
         await nextTask();
         if (this._suppressNextNativeSignalingState === "stable")
           this._suppressNextNativeSignalingState = null;
@@ -3124,8 +3121,7 @@ class RTCPeerConnection extends SimpleEventTarget {
         this._armDataChannelNativeCloseSuppression();
         this._refreshIceRole();
         this._updateSctpTransport();
-        if (previousState !== this._signalingState)
-          this.dispatchEvent(makeEvent("signalingstatechange"));
+        if (previousState !== this._signalingState) this._dispatchSignalingStateChange();
         await nextTask();
         return;
       }
@@ -3148,8 +3144,7 @@ class RTCPeerConnection extends SimpleEventTarget {
         this._refreshIceRole();
         this._assignDataChannelIdsFromDtlsRole();
         this._updateSctpTransport();
-        if (previousState !== this._signalingState)
-          this.dispatchEvent(makeEvent("signalingstatechange"));
+        if (previousState !== this._signalingState) this._dispatchSignalingStateChange();
         await nextTask();
         return;
       }
@@ -3161,8 +3156,7 @@ class RTCPeerConnection extends SimpleEventTarget {
         this._syncSignalingStateFromDescriptions();
         this._refreshIceRole();
         this._updateSctpTransport();
-        if (previousState !== this._signalingState)
-          this.dispatchEvent(makeEvent("signalingstatechange"));
+        if (previousState !== this._signalingState) this._dispatchSignalingStateChange();
         await nextTask();
         return;
       }
@@ -3180,8 +3174,7 @@ class RTCPeerConnection extends SimpleEventTarget {
         this._refreshIceRole();
         this._assignDataChannelIdsFromDtlsRole();
         this._updateSctpTransport();
-        if (previousState !== this._signalingState)
-          this.dispatchEvent(makeEvent("signalingstatechange"));
+        if (previousState !== this._signalingState) this._dispatchSignalingStateChange();
         await nextTask();
         return;
       }
@@ -3204,7 +3197,7 @@ class RTCPeerConnection extends SimpleEventTarget {
         }
         this._refreshIceRole();
         this._updateSctpTransport();
-        this.dispatchEvent(makeEvent("signalingstatechange"));
+        this._dispatchSignalingStateChange();
         await nextTask();
         return;
       }
@@ -3251,7 +3244,7 @@ class RTCPeerConnection extends SimpleEventTarget {
       if (previousSignalingState !== this._signalingState) {
         suppressedNativeSignalingState = this._signalingState;
         this._suppressNextNativeSignalingState = suppressedNativeSignalingState;
-        this.dispatchEvent(makeEvent("signalingstatechange"));
+        this._dispatchSignalingStateChange();
       }
       if (normalized.type !== "offer") {
         for (const candidate of this._pendingIce.splice(0)) await this.addIceCandidate(candidate);
@@ -3385,7 +3378,7 @@ class RTCPeerConnection extends SimpleEventTarget {
     for (const channel of this._channels.values()) {
       if (channel.readyState !== "closed") channel._handleClose();
     }
-    this.dispatchEvent(makeEvent("signalingstatechange"));
+    this._dispatchSignalingStateChange();
     this.dispatchEvent(makeEvent("iceconnectionstatechange"));
     this.dispatchEvent(makeEvent("connectionstatechange"));
   }
@@ -4132,6 +4125,11 @@ class RTCPeerConnection extends SimpleEventTarget {
     this._signalingState = this._descriptionSignalingState();
   }
 
+  _dispatchSignalingStateChange() {
+    this._lastDispatchedSignalingState = this._signalingState;
+    this.dispatchEvent(makeEvent("signalingstatechange"));
+  }
+
   _setPendingLocalDescription(description) {
     this._pendingLocalDescription = description;
     this._localDescription = description || this._currentLocalDescription;
@@ -4192,8 +4190,7 @@ class RTCPeerConnection extends SimpleEventTarget {
       this.dispatchEvent(makeEvent("icegatheringstatechange"));
       this._iceTransport()?.dispatchEvent(makeEvent("gatheringstatechange"));
     }
-    if (previousState !== this._signalingState)
-      this.dispatchEvent(makeEvent("signalingstatechange"));
+    if (previousState !== this._signalingState) this._dispatchSignalingStateChange();
     await nextTask();
     if (this._suppressNextNativeSignalingState === "stable")
       this._suppressNextNativeSignalingState = null;
@@ -4436,8 +4433,7 @@ class RTCPeerConnection extends SimpleEventTarget {
     this._signalingState = "stable";
     this._refreshIceRole();
     this._updateSctpTransport();
-    if (previousState !== this._signalingState)
-      this.dispatchEvent(makeEvent("signalingstatechange"));
+    if (previousState !== this._signalingState) this._dispatchSignalingStateChange();
     await nextTask();
   }
 
@@ -4449,8 +4445,7 @@ class RTCPeerConnection extends SimpleEventTarget {
     this._syncSignalingStateFromDescriptions();
     this._refreshIceRole();
     this._updateSctpTransport();
-    if (previousState !== this._signalingState)
-      this.dispatchEvent(makeEvent("signalingstatechange"));
+    if (previousState !== this._signalingState) this._dispatchSignalingStateChange();
     await nextTask();
   }
 
@@ -4464,8 +4459,7 @@ class RTCPeerConnection extends SimpleEventTarget {
     this._syncSignalingStateFromDescriptions();
     this._refreshIceRole();
     this._updateSctpTransport();
-    if (previousState !== this._signalingState)
-      this.dispatchEvent(makeEvent("signalingstatechange"));
+    if (previousState !== this._signalingState) this._dispatchSignalingStateChange();
     await nextTask();
   }
 
@@ -4484,7 +4478,7 @@ class RTCPeerConnection extends SimpleEventTarget {
     this._clearNegotiationNeededIfDataMLineIsPresent();
     this._refreshIceRole();
     this._updateSctpTransport();
-    this.dispatchEvent(makeEvent("signalingstatechange"));
+    this._dispatchSignalingStateChange();
     await nextTask();
   }
 
@@ -4648,9 +4642,14 @@ class RTCPeerConnection extends SimpleEventTarget {
           break;
         }
         if (event.state !== this._descriptionSignalingState()) break;
-        if (event.state === this._signalingState) break;
+        if (
+          event.state === this._signalingState &&
+          event.state === this._lastDispatchedSignalingState
+        ) {
+          break;
+        }
         this._signalingState = event.state;
-        this.dispatchEvent(makeEvent("signalingstatechange"));
+        this._dispatchSignalingStateChange();
         break;
     }
   }
diff --git a/test/basic.test.js b/test/basic.test.js
index f97198e..d8a0f11 100644
--- a/test/basic.test.js
+++ b/test/basic.test.js
@@ -231,6 +231,31 @@ test("setRemoteDescription ignores late duplicate native signalingstatechange",
   assert.deepEqual(states, ["have-remote-offer"]);
 });
 
+test("setLocalDescription emits repeated offer states across renegotiation", async (t) => {
+  const offerer = new RTCPeerConnection();
+  const answerer = new RTCPeerConnection();
+  t.after(() => closeAllAndWait(offerer, answerer));
+  offerer.createDataChannel("initial");
+
+  const states = [];
+  offerer.addEventListener("signalingstatechange", () => states.push(offerer.signalingState));
+
+  const offer = await offerer.createOffer();
+  await offerer.setLocalDescription(offer);
+  await answerer.setRemoteDescription(offer);
+  const answer = await answerer.createAnswer();
+  await answerer.setLocalDescription(answer);
+  await offerer.setRemoteDescription(answer);
+
+  assert.equal(offerer.signalingState, "stable");
+  offerer.createDataChannel("renegotiated");
+  const reoffer = await offerer.createOffer();
+  await offerer.setLocalDescription(reoffer);
+
+  assert.equal(offerer.signalingState, "have-local-offer");
+  assert.deepEqual(states, ["have-local-offer", "stable", "have-local-offer"]);
+});
+
 test("once event listeners are removed before invocation", () => {
   const target = new EventTarget();
   let calls = 0;