diff --git a/package.json b/package.json
index 0bb7c52cb0..f4a75782ac 100644
--- a/package.json
+++ b/package.json
@@ -97,7 +97,7 @@
     "@react-spring/web": "9.5.5",
     "@signalapp/better-sqlite3": "8.6.0",
     "@signalapp/libsignal-client": "0.36.0",
-    "@signalapp/ringrtc": "2.35.0",
+    "@signalapp/ringrtc": "2.36.0",
     "@signalapp/windows-dummy-keystroke": "1.0.0",
     "@types/fabric": "4.5.3",
     "backbone": "1.4.0",
diff --git a/protos/SignalService.proto b/protos/SignalService.proto
index 5fc976738b..e7943f12f4 100644
--- a/protos/SignalService.proto
+++ b/protos/SignalService.proto
@@ -54,8 +54,6 @@ message Content {
   optional EditMessage editMessage = 11;
 }
 
-// Everything in CallingMessage must be kept in sync with RingRTC (ringrtc-node).
-// Whenever you change this, make sure you change textsecure.d.ts and RingRTC.
 message CallingMessage {
   message Offer {
     enum Type {
@@ -64,27 +62,22 @@ message CallingMessage {
     }
 
     optional uint64 callId = 1;
-    // Legacy/deprecated; replaced by 'opaque'
-    optional string sdp    = 2;
+    reserved /* sdp */       2;
     optional Type   type   = 3;
     optional bytes  opaque = 4;
   }
 
   message Answer {
     optional uint64 callId = 1;
-    // Legacy/deprecated; replaced by 'opaque'
-    optional string sdp    = 2;
+    reserved /* sdp */       2;
     optional bytes  opaque = 3;
   }
 
   message IceCandidate {
     optional uint64 callId = 1;
-    // Legacy/deprecated; remove when old clients are gone.
-    optional string mid    = 2;
-    // Legacy/deprecated; remove when old clients are gone.
-    optional uint32 line   = 3;
-    // Legacy/deprecated; replaced by 'opaque'
-    optional string sdp    = 4;
+    reserved /* mid */       2;
+    reserved /* line */      3;
+    reserved /* sdp */       4;
     optional bytes  opaque = 5;
   }
 
@@ -119,10 +112,11 @@ message CallingMessage {
   optional Offer        offer               = 1;
   optional Answer       answer              = 2;
   repeated IceCandidate iceCandidates       = 3;
-  optional Hangup       legacyHangup        = 4;
+  reserved /* legacyHangup */                 4;
   optional Busy         busy                = 5;
+  reserved /* profileKey */                   6;
   optional Hangup       hangup              = 7;
-  optional bool         supportsMultiRing   = 8;
+  reserved /* multiRing */                    8;
   optional uint32       destinationDeviceId = 9;
   optional Opaque       opaque              = 10;
 }
diff --git a/ts/services/calling.ts b/ts/services/calling.ts
index a9034ab0b8..923a7d9bd9 100644
--- a/ts/services/calling.ts
+++ b/ts/services/calling.ts
@@ -238,10 +238,8 @@ function protoToCallingMessage({
   offer,
   answer,
   iceCandidates,
-  legacyHangup,
   busy,
   hangup,
-  supportsMultiRing,
   destinationDeviceId,
   opaque,
 }: Proto.ICallingMessage): CallingMessage {
@@ -273,14 +271,6 @@ function protoToCallingMessage({
         ? new AnswerMessage(answer.callId, Buffer.from(answer.opaque))
         : undefined,
     iceCandidates: newIceCandidates.length > 0 ? newIceCandidates : undefined,
-    legacyHangup:
-      legacyHangup && legacyHangup.callId
-        ? new HangupMessage(
-            legacyHangup.callId,
-            dropNull(legacyHangup.type) as number,
-            legacyHangup.deviceId || 0
-          )
-        : undefined,
     busy: busy && busy.callId ? new BusyMessage(busy.callId) : undefined,
     hangup:
       hangup && hangup.callId
@@ -290,7 +280,6 @@ function protoToCallingMessage({
             hangup.deviceId || 0
           )
         : undefined,
-    supportsMultiRing: dropNull(supportsMultiRing),
     destinationDeviceId: dropNull(destinationDeviceId),
     opaque: opaque
       ? {
diff --git a/ts/util/callingMessageToProto.ts b/ts/util/callingMessageToProto.ts
index 7b91c24a2e..12736c6bcc 100644
--- a/ts/util/callingMessageToProto.ts
+++ b/ts/util/callingMessageToProto.ts
@@ -13,10 +13,8 @@ export function callingMessageToProto(
     offer,
     answer,
     iceCandidates,
-    legacyHangup,
     busy,
     hangup,
-    supportsMultiRing,
     destinationDeviceId,
     opaque,
   }: CallingMessage,
@@ -61,13 +59,6 @@ export function callingMessageToProto(
           };
         })
       : undefined,
-    legacyHangup: legacyHangup
-      ? {
-          ...legacyHangup,
-          callId: Long.fromValue(legacyHangup.callId),
-          type: legacyHangup.type as number,
-        }
-      : undefined,
     busy: busy
       ? {
           ...busy,
@@ -81,7 +72,6 @@ export function callingMessageToProto(
           type: hangup.type as number,
         }
       : undefined,
-    supportsMultiRing,
     destinationDeviceId,
     opaque: opaqueField,
   };
diff --git a/yarn.lock b/yarn.lock
index defa56b6b8..d3c6a01430 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -3986,10 +3986,10 @@
     ws "^8.4.2"
     zod "^3.20.2"
 
-"@signalapp/ringrtc@2.35.0":
-  version "2.35.0"
-  resolved "https://registry.yarnpkg.com/@signalapp/ringrtc/-/ringrtc-2.35.0.tgz#ca9c5fd660fa370720b85f784fc287acbbc6e68f"
-  integrity sha512-PXy+Io24UhGJQYivayVwIwgAT4A1g88JDxvzz5PNddlpHmSSRoBnH57fcZ1ElHTkqrcNb+V4Tch6SAuYupucow==
+"@signalapp/ringrtc@2.36.0":
+  version "2.36.0"
+  resolved "https://registry.yarnpkg.com/@signalapp/ringrtc/-/ringrtc-2.36.0.tgz#67d1b48bd4c1ea31c155ea14a0bd28f04e46eff5"
+  integrity sha512-KDQYkSjXQMDoXt+4qSIXyAbWGbb6vV7OjFCDCmSwEmZJ7/XSr4XtQXtnspF8WrxeMVAFqJqpZho7iOy40u565A==
   dependencies:
     https-proxy-agent "7.0.1"
     tar "^6.1.0"