diff --git a/pkgs/by-name/si/signal-desktop/package.nix b/pkgs/by-name/si/signal-desktop/package.nix
index 8f1b51c813c6..a78be6416e64 100644
--- a/pkgs/by-name/si/signal-desktop/package.nix
+++ b/pkgs/by-name/si/signal-desktop/package.nix
@@ -52,13 +52,13 @@ let
     '';
   });
 
-  version = "7.64.0";
+  version = "7.66.0";
 
   src = fetchFromGitHub {
     owner = "signalapp";
     repo = "Signal-Desktop";
     tag = "v${version}";
-    hash = "sha256-jBSL9g7+lgyG4luKP84MaWfS+dniBzp3lRimgKtWrI8=";
+    hash = "sha256-8IhY7m9beyfbs8Pnm8PeSW7vL+aBIgcN8HVmstgKFe8=";
   };
 
   sticker-creator = stdenv.mkDerivation (finalAttrs: {
@@ -122,15 +122,15 @@ stdenv.mkDerivation (finalAttrs: {
     fetcherVersion = 1;
     hash =
       if withAppleEmojis then
-        "sha256-xAmIfTv270g6FoNPCauPBT2H3XTgK6MOjIIwRk0U9PY="
+        "sha256-XO+lbCndOupUncod2b6w7BdesGX84GgQQ3SYlX1yp0Q="
       else
-        "sha256-Wmqu+tkoT13PEQ6QA2KczLtgbxgCWwZ6pNuE1klWLCk=";
+        "sha256-+pq4jGJzy0bg9rkN6jKyuiGiad2BP28mIy+/SgbyNWc=";
   };
 
   env = {
     ELECTRON_SKIP_BINARY_DOWNLOAD = "1";
     SIGNAL_ENV = "production";
-    SOURCE_DATE_EPOCH = 1753917014;
+    SOURCE_DATE_EPOCH = 1755119611;
   };
 
   preBuild = ''
diff --git a/pkgs/by-name/si/signal-desktop/ringrtc.nix b/pkgs/by-name/si/signal-desktop/ringrtc.nix
index 8d79bfd96e28..f7a6bcb33347 100644
--- a/pkgs/by-name/si/signal-desktop/ringrtc.nix
+++ b/pkgs/by-name/si/signal-desktop/ringrtc.nix
@@ -19,16 +19,16 @@ let
 in
 rustPlatform.buildRustPackage (finalAttrs: {
   pname = "ringrtc";
-  version = "2.54.1";
+  version = "2.56.0";
 
   src = fetchFromGitHub {
     owner = "signalapp";
     repo = "ringrtc";
     tag = "v${finalAttrs.version}";
-    hash = "sha256-T8oI04DOnTHFs7xlJ1wJbK64zqgJ2dM4Plz+C26DWEg=";
+    hash = "sha256-KEwN6x24hXmK9lqU2M9/5qbBk7zDxeTRbB0vJ1K9d3U=";
   };
 
-  cargoHash = "sha256-KTPZ/1rDqxYxgUfgVTnNg7nLNxwCWGXDf+uJAhmpB3g=";
+  cargoHash = "sha256-ghuF1wxAf5psZoWNYOCAubGo0KDwJlqcBXgUbPMD9ac=";
 
   cargoBuildFlags = [
     "-p"
diff --git a/pkgs/by-name/si/signal-desktop/signal-sqlcipher.nix b/pkgs/by-name/si/signal-desktop/signal-sqlcipher.nix
index 5c4e316c4300..99a8b79b90a1 100644
--- a/pkgs/by-name/si/signal-desktop/signal-sqlcipher.nix
+++ b/pkgs/by-name/si/signal-desktop/signal-sqlcipher.nix
@@ -11,13 +11,13 @@
 }:
 stdenv.mkDerivation (finalAttrs: {
   pname = "node-sqlcipher";
-  version = "2.1.0";
+  version = "2.2.2";
 
   src = fetchFromGitHub {
     owner = "signalapp";
     repo = "node-sqlcipher";
     tag = "v${finalAttrs.version}";
-    hash = "sha256-JYdc3H8PhDLkJH5ApfReq0e7HgKoJaK01JGuzoqftyc=";
+    hash = "sha256-vrY2cu8yfwMX7O6h2GgLhdvQvYOgl916E2z1Pf77ZI0=";
   };
 
   pnpmDeps = pnpm.fetchDeps {
diff --git a/pkgs/by-name/si/signal-desktop/webrtc-fix-gcc-build.patch b/pkgs/by-name/si/signal-desktop/webrtc-fix-gcc-build.patch
new file mode 100644
index 000000000000..701edc9c5d22
--- /dev/null
+++ b/pkgs/by-name/si/signal-desktop/webrtc-fix-gcc-build.patch
@@ -0,0 +1,39 @@
+diff --git a/p2p/base/port_interface.h b/p2p/base/port_interface.h
+index f774b3d..c7242d9 100644
+--- a/p2p/base/port_interface.h
++++ b/p2p/base/port_interface.h
+@@ -55,7 +55,7 @@ class PortInterface {
+   virtual ~PortInterface();
+ 
+   virtual IceCandidateType Type() const = 0;
+-  virtual const Network* Network() const = 0;
++  virtual const ::webrtc::Network* Network() const = 0;
+ 
+   // Methods to set/get ICE role and tiebreaker values.
+   virtual void SetIceRole(IceRole role) = 0;
+diff --git a/pc/codec_vendor.h b/pc/codec_vendor.h
+index 1472225..251afbd 100644
+--- a/pc/codec_vendor.h
++++ b/pc/codec_vendor.h
+@@ -119,7 +119,7 @@ class CodecVendor {
+ class CodecLookupHelper {
+  public:
+   virtual ~CodecLookupHelper() = default;
+-  virtual PayloadTypeSuggester* PayloadTypeSuggester() = 0;
++  virtual ::webrtc::PayloadTypeSuggester* PayloadTypeSuggester() = 0;
+   // Look up the codec vendor to use, depending on context.
+   // This call may get additional arguments in the future, to aid
+   // in selection of the correct context.
+diff --git a/pc/jsep_transport.h b/pc/jsep_transport.h
+index ab914f3..3ff6f6f 100644
+--- a/pc/jsep_transport.h
++++ b/pc/jsep_transport.h
+@@ -214,7 +214,7 @@ class JsepTransport {
+     return rtp_dtls_transport_;
+   }
+ 
+-  scoped_refptr<SctpTransport> SctpTransport() const { return sctp_transport_; }
++  scoped_refptr<::webrtc::SctpTransport> SctpTransport() const { return sctp_transport_; }
+ 
+   // TODO(bugs.webrtc.org/9719): Delete method, update callers to use
+   // SctpTransport() instead.
diff --git a/pkgs/by-name/si/signal-desktop/webrtc-sources.json b/pkgs/by-name/si/signal-desktop/webrtc-sources.json
index 56eaf7261468..05a4da47fa00 100644
--- a/pkgs/by-name/si/signal-desktop/webrtc-sources.json
+++ b/pkgs/by-name/si/signal-desktop/webrtc-sources.json
@@ -1,82 +1,82 @@
 {
     "src": {
         "args": {
-            "hash": "sha256-ErUR9Xg69X5PEPoDw65BU2Tcpo7+JC2Pc+pYIxEGzNA=",
+            "hash": "sha256-3hgBFFu2m+s9qzqNgbJSAmHH4ouHaQCL9nz2sFMy7hc=",
             "owner": "signalapp",
             "repo": "webrtc",
-            "tag": "7103e"
+            "tag": "7204a"
         },
         "fetcher": "fetchFromGitHub"
     },
     "src/base": {
         "args": {
-            "hash": "sha256-Jm+OJlnJJUrTtsAMWEB+DM7eLZyIMJa5jQysVsyHwfk=",
-            "rev": "1d80e43078965dbe6ded5521fbffb128f59124a6",
+            "hash": "sha256-wKFvb28LeB7/YVGmWKhcvXCEeNB6HaxMgZJLpC5a1Zk=",
+            "rev": "4ba67f727a84a10e32a417dc7e194f4fc6a23390",
             "url": "https://chromium.googlesource.com/chromium/src/base"
         },
         "fetcher": "fetchFromGitiles"
     },
     "src/build": {
         "args": {
-            "hash": "sha256-4iM0mh+1AL1maBjle+GOmfr4AMadQpcNDQg0X5tVD5U=",
-            "rev": "52d62707eaec02b88722a99e335315d166ceda77",
+            "hash": "sha256-Bfd3paXVGon4p85V2UO6vEHG/t1g8EAxvYQ+DdPcuI8=",
+            "rev": "7adbc7e3263f3ab427ba7c5ac7839a69082ff7fb",
             "url": "https://chromium.googlesource.com/chromium/src/build"
         },
         "fetcher": "fetchFromGitiles"
     },
     "src/buildtools": {
         "args": {
-            "hash": "sha256-Nbaoin+aMtJJaC4mDTYFB7q3RbmzSuEUDDZN3tAXoSI=",
-            "rev": "6f359296daa889aa726f3d05046b9f37be241169",
+            "hash": "sha256-adtGyo+wm8+keR0um1fOdChABdBYboGBawD0LfcY00w=",
+            "rev": "1fc7350e65e9d7848c083b83aaf67611e74a5654",
             "url": "https://chromium.googlesource.com/chromium/src/buildtools"
         },
         "fetcher": "fetchFromGitiles"
     },
     "src/ringrtc/opus/src": {
         "args": {
-            "hash": "sha256-Vztq+Z388Welj2cfChumimfEXtVn4zCcrGBedZFoTmM=",
+            "hash": "sha256-63JClPZ+Me6thFp6iPf++jV2K1hF0KR1n6Bly+ocNq8=",
             "owner": "xiph",
             "repo": "opus",
-            "rev": "0e30966b198ad28943799eaf5b3b08100b6f70c3"
+            "rev": "55513e81d8f606bd75d0ff773d2144e5f2a732f5"
         },
         "fetcher": "fetchFromGitHub"
     },
     "src/testing": {
         "args": {
-            "hash": "sha256-CZOMatu2JSB3fztVz8DvW87KtglBqq0hUYm3IM3pZwY=",
-            "rev": "f46b86c7f1fc7a7f52e61c11dbd0573a48cf7a6a",
+            "hash": "sha256-CQg6fxDz0dk4fD+X53stTwJJ25feYoU9KdsgjTAzbp8=",
+            "rev": "44b0a8d794b28dbd74614e5f5e7da2b407030647",
             "url": "https://chromium.googlesource.com/chromium/src/testing"
         },
         "fetcher": "fetchFromGitiles"
     },
     "src/third_party": {
         "args": {
-            "hash": "sha256-BbFD3QSoHMHsy4d+Quz01Nta7nArhe8or9zsARmlc/U=",
-            "rev": "10064104c1f11074312018c3a9c4b66f25584bdd",
+            "hash": "sha256-KfIQS+FrzFDAS0B3yfzPj4PqD16H0dBE6z1JgFag/20=",
+            "rev": "8a150db896356cd9b47f8c1a6d916347393f90f2",
             "url": "https://chromium.googlesource.com/chromium/src/third_party"
         },
         "fetcher": "fetchFromGitiles"
     },
     "src/third_party/boringssl/src": {
         "args": {
-            "hash": "sha256-fUPl9E2b7RfanH0pZNArIkJ4lnnmCtyk7sCaTArCB70=",
-            "rev": "a9993612faac4866bc33ca8ff37bfd0659af1c48",
+            "hash": "sha256-+Gs+efB1ZizjMYRSRTQrMDPZsDC+dgNJ9+yHXkzm/ZM=",
+            "rev": "9295969e1dad2c31d0d99481734c1c68dcbc6403",
             "url": "https://boringssl.googlesource.com/boringssl.git"
         },
         "fetcher": "fetchFromGitiles"
     },
     "src/third_party/breakpad/breakpad": {
         "args": {
-            "hash": "sha256-9MePkv10fwyJ0VDWRtvRcbLMAcJzZlziGTPzXJYjVJE=",
-            "rev": "657a441e5c1a818d4c10b7bafd431454e6614901",
+            "hash": "sha256-+Z7KphmQYCeN0aJkqyMrJ4tIi3BhqN16KoPNLb/bMGo=",
+            "rev": "2625edb085169e92cf036c236ac79ab594a7b1cc",
             "url": "https://chromium.googlesource.com/breakpad/breakpad.git"
         },
         "fetcher": "fetchFromGitiles"
     },
     "src/third_party/catapult": {
         "args": {
-            "hash": "sha256-xwR9gGE8uU8qFr7GgS3/1JiuTmj1tvcM5CoCfPMdW2M=",
-            "rev": "5bda0fdab9d93ec9963e2cd858c7b49ad7fec7d4",
+            "hash": "sha256-xHe9WoAq1FElMSnu5mlEzrH+EzKiwWXeXMCH69KL5a0=",
+            "rev": "5477c6dfde1132b685c73edc16e1bc71449a691d",
             "url": "https://chromium.googlesource.com/catapult.git"
         },
         "fetcher": "fetchFromGitiles"
@@ -105,6 +105,14 @@
         },
         "fetcher": "fetchFromGitiles"
     },
+    "src/third_party/compiler-rt/src": {
+        "args": {
+            "hash": "sha256-FVdcKGwRuno3AzS6FUvI8OTj3mBMRfFR2A8GzYcwIU4=",
+            "rev": "57196dd146582915c955f6d388e31aea93220c51",
+            "url": "https://chromium.googlesource.com/external/github.com/llvm/llvm-project/compiler-rt.git"
+        },
+        "fetcher": "fetchFromGitiles"
+    },
     "src/third_party/crc32c/src": {
         "args": {
             "hash": "sha256-KBraGaO5LmmPP+p8RuDogGldbTWdNDK+WzF4Q09keuE=",
@@ -123,16 +131,16 @@
     },
     "src/third_party/depot_tools": {
         "args": {
-            "hash": "sha256-O9vVbrCqHD4w39Q8ZAxl1RwzJxbH/thjqacMtCnOPdg=",
-            "rev": "f40ddcd8d51626fb7be3ab3c418b3f3be801623f",
+            "hash": "sha256-1avxBlK0WLHTru5wUecbiGpSEYv8Epobsl4EfCaWX9A=",
+            "rev": "a8900cc0f023d6a662eb66b317e8ddceeb113490",
             "url": "https://chromium.googlesource.com/chromium/tools/depot_tools.git"
         },
         "fetcher": "fetchFromGitiles"
     },
     "src/third_party/ffmpeg": {
         "args": {
-            "hash": "sha256-bGa0BCvzNxEKu9VZEwJ1NLt+b2KKWUxshpKSN2FHNEM=",
-            "rev": "fbce2a76c00cd2e5aeffe3c2e71d44c284ec52d6",
+            "hash": "sha256-noc3iZ1yCEgkwWyznx48rXC8JuKxla9QgC/CIjRL/y8=",
+            "rev": "dcdd0fa51b65a0b1688ff6b8f0cc81908f09ded2",
             "url": "https://chromium.googlesource.com/chromium/third_party/ffmpeg.git"
         },
         "fetcher": "fetchFromGitiles"
@@ -147,24 +155,24 @@
     },
     "src/third_party/fontconfig/src": {
         "args": {
-            "hash": "sha256-W5WIgC6A52kY4fNkbsDEa0o+dfd97Rl5NKfgnIRpI00=",
-            "rev": "14d466b30a8ab4a9d789977ed94f2c30e7209267",
+            "hash": "sha256-Kz7KY+evfOciKFHIBLG1JxIRgHRTzuBLgxXHv3m/Y1Y=",
+            "rev": "8cf0ce700a8abe0d97ace4bf7efc7f9534b729ba",
             "url": "https://chromium.googlesource.com/external/fontconfig.git"
         },
         "fetcher": "fetchFromGitiles"
     },
     "src/third_party/freetype/src": {
         "args": {
-            "hash": "sha256-LhSIX7X0+dmLADYGNclg73kIrXmjTMM++tJ92MKzanA=",
-            "rev": "82090e67c24259c343c83fd9cefe6ff0be7a7eca",
+            "hash": "sha256-Mt6uJGGHiGYNNLx2xrooYirynL9DW0s05G1GJiqzhi8=",
+            "rev": "e07e56c7f106b600262ab653d696b7b57f320127",
             "url": "https://chromium.googlesource.com/chromium/src/third_party/freetype2.git"
         },
         "fetcher": "fetchFromGitiles"
     },
     "src/third_party/fuzztest/src": {
         "args": {
-            "hash": "sha256-1pzRK+iorGhnLWWpuWdRjBCh0whKoDgEUhTTs2NlPZU=",
-            "rev": "3c7bc855a4938c5d0d1d07303aa0697c88d33e6c",
+            "hash": "sha256-MHli8sadgC3OMesBGhkjPM/yW49KFOtdFuBII1bcFas=",
+            "rev": "f03aafb7516050ea73f617bf969f03eac641aefc",
             "url": "https://chromium.googlesource.com/external/github.com/google/fuzztest.git"
         },
         "fetcher": "fetchFromGitiles"
@@ -179,16 +187,16 @@
     },
     "src/third_party/googletest/src": {
         "args": {
-            "hash": "sha256-8keF4E6ag/rikv5ROaWUB7oganjViupEAdxW1NJVgmE=",
-            "rev": "52204f78f94d7512df1f0f3bea1d47437a2c3a58",
+            "hash": "sha256-md/jPkFrs/0p0BYGyquh57Zxh+1dKaK26PDtUN1+Ce0=",
+            "rev": "09ffd0015395354774c059a17d9f5bee36177ff9",
             "url": "https://chromium.googlesource.com/external/github.com/google/googletest.git"
         },
         "fetcher": "fetchFromGitiles"
     },
     "src/third_party/grpc/src": {
         "args": {
-            "hash": "sha256-0ljptpIh4wirWZ+utJyiy4g4dhPRB8pIvjcvoqeycu0=",
-            "rev": "d8ce421830bd993885038934abdc74e1e56e3213",
+            "hash": "sha256-z96goSSgBUvTjNse/LO88zNIzg+SWEYgVDaoA/elkLU=",
+            "rev": "cadf3c8329377e93b1f5e2d6a43d91f7a4becc28",
             "url": "https://chromium.googlesource.com/external/github.com/grpc/grpc.git"
         },
         "fetcher": "fetchFromGitiles"
@@ -203,16 +211,16 @@
     },
     "src/third_party/harfbuzz-ng/src": {
         "args": {
-            "hash": "sha256-/WNGrvyvJ+FGqoIoHapaux1iu63zjID0yR30HYPpxaw=",
-            "rev": "8efd2d85c78fbba6ca09a3e454f77525f3b296ce",
+            "hash": "sha256-lNnCtgIegUy4DLhYaGZXcEaFw83KWAHoKpz69AEsWp4=",
+            "rev": "9f83bbbe64654b45ba5bb06927ff36c2e7588495",
             "url": "https://chromium.googlesource.com/external/github.com/harfbuzz/harfbuzz.git"
         },
         "fetcher": "fetchFromGitiles"
     },
     "src/third_party/icu": {
         "args": {
-            "hash": "sha256-Omv4sp9z44eINXtaE0+1TzIU1q2hWviANA79fmkF78U=",
-            "rev": "c9fb4b3a6fb54aa8c20a03bbcaa0a4a985ffd34b",
+            "hash": "sha256-/T7uyzwTCDaamLwSvutvbn6BJuoG1RqeR+xhXI5jmJw=",
+            "rev": "b929596baebf0ab4ac7ec07f38365db4c50a559d",
             "url": "https://chromium.googlesource.com/chromium/deps/icu.git"
         },
         "fetcher": "fetchFromGitiles"
@@ -243,24 +251,24 @@
     },
     "src/third_party/libaom/source/libaom": {
         "args": {
-            "hash": "sha256-nfnt5JXyKR9JR3BflpGEkwzDo0lYa/oeCDm2bKH/j1g=",
-            "rev": "9680f2b1781fb33b9eeb52409b75c679c8a954be",
+            "hash": "sha256-pyLKjLG83Jlx6I+0M8Ah94ku4NIFcrHNYswfVHMvdrc=",
+            "rev": "2cca4aba034f99842c2e6cdc173f83801d289764",
             "url": "https://aomedia.googlesource.com/aom.git"
         },
         "fetcher": "fetchFromGitiles"
     },
     "src/third_party/libc++/src": {
         "args": {
-            "hash": "sha256-Ypi5fmWdoNA1IZDoKITlkNRITmho8HzVlgjlmtx0Y84=",
-            "rev": "449310fe2e37834a7e62972d2a690cade2ef596b",
+            "hash": "sha256-36ulJk/YTfP5k1sDeA/WQyIO8xaplRKK4cQhfTZdpko=",
+            "rev": "a01c02c9d4acbdae3b7e8a2f3ee58579a9c29f96",
             "url": "https://chromium.googlesource.com/external/github.com/llvm/llvm-project/libcxx.git"
         },
         "fetcher": "fetchFromGitiles"
     },
     "src/third_party/libc++abi/src": {
         "args": {
-            "hash": "sha256-wMMfj3E2AQJxovoSEIuT2uTyrcGBurS1HrHZOmP36+g=",
-            "rev": "94c5d7a8edc09f0680aee57548c0b5d400c2840d",
+            "hash": "sha256-DkCvfFjMztFTzKf081XyiefW6tMBSZ1AdzcPzXAVPnk=",
+            "rev": "9810fb23f6ba666f017c2b67c67de2bcac2b44bd",
             "url": "https://chromium.googlesource.com/external/github.com/llvm/llvm-project/libcxxabi.git"
         },
         "fetcher": "fetchFromGitiles"
@@ -283,32 +291,32 @@
     },
     "src/third_party/libunwind/src": {
         "args": {
-            "hash": "sha256-LdRaxPo2i7uMeFxpR7R4o3V+1ycBcygT/D+gklsD0tA=",
-            "rev": "e2e6f2a67e9420e770b014ce9bba476fa2ab9874",
+            "hash": "sha256-O1S3ijnoVrTHmZDGmgQQe0MVGsSZL7usXAPflGFmMXY=",
+            "rev": "8575f4ae4fcf8892938bd9766cf1a5c90a0ed04e",
             "url": "https://chromium.googlesource.com/external/github.com/llvm/llvm-project/libunwind.git"
         },
         "fetcher": "fetchFromGitiles"
     },
     "src/third_party/libvpx/source/libvpx": {
         "args": {
-            "hash": "sha256-+4I6B1aTa+txhey6LMeflU0pe39V6TJ+lNIJPh6yFGM=",
-            "rev": "027bbee30a0103b99d86327b48d29567fed11688",
+            "hash": "sha256-SFdYF8vnwNHQbZ1N/ZHr4kxfi9o+BAtuqbak80m9uP4=",
+            "rev": "b84ca9b63730e7d4563573a56a66317eb0087ebf",
             "url": "https://chromium.googlesource.com/webm/libvpx.git"
         },
         "fetcher": "fetchFromGitiles"
     },
     "src/third_party/libyuv": {
         "args": {
-            "hash": "sha256-8sH11psWPXLMy3Q0tAizCZ/woUWvTCCUf44jcr2C4Xs=",
-            "rev": "ccdf870348764e4b77fa3b56accb2a896a901bad",
+            "hash": "sha256-J9Wi3aCc6OjtQCP8JnrY7PYrY587dKLaa1KGAMWmE0c=",
+            "rev": "61bdaee13a701d2b52c6dc943ccc5c888077a591",
             "url": "https://chromium.googlesource.com/libyuv/libyuv.git"
         },
         "fetcher": "fetchFromGitiles"
     },
     "src/third_party/llvm-libc/src": {
         "args": {
-            "hash": "sha256-sV1wqk8BC7cl7HPgAd+kmxOWpBuWT6kTX91IXIoSYts=",
-            "rev": "188329a7f2118a957efbb3e6219c255e7dba997c",
+            "hash": "sha256-BsoHIvdqgYzBUkd23++enEHIhq5GeVWrWdVdhXrHh9A=",
+            "rev": "9c3ae3120fe83b998d0498dcc9ad3a56c29fad0c",
             "url": "https://chromium.googlesource.com/external/github.com/llvm/llvm-project/libc.git"
         },
         "fetcher": "fetchFromGitiles"
@@ -323,8 +331,8 @@
     },
     "src/third_party/nasm": {
         "args": {
-            "hash": "sha256-yg4qwhS68B/sWfcJeXUqPC69ppE8FaIyRc+IkUQXSnU=",
-            "rev": "767a169c8811b090df222a458b25dfa137fc637e",
+            "hash": "sha256-neYrS4kQ76ihUh22Q3uPR67Ld8+yerA922YSZU1KxJs=",
+            "rev": "9f916e90e6fc34ec302573f6ce147e43e33d68ca",
             "url": "https://chromium.googlesource.com/chromium/deps/nasm.git"
         },
         "fetcher": "fetchFromGitiles"
@@ -339,16 +347,16 @@
     },
     "src/third_party/perfetto": {
         "args": {
-            "hash": "sha256-peD4Vnar1Uf8S/JYPpHH8dJZCDIpzpE4EYDfTqVyG8U=",
-            "rev": "40b529923598b739b2892a536a7692eedbed5685",
-            "url": "https://android.googlesource.com/platform/external/perfetto.git"
+            "hash": "sha256-kzVsti2tygOMgT61TmCz26AByMd3gIXA6xz8RE0iCz4=",
+            "rev": "dd35b295cd359ba094404218414955f961a0d6ae",
+            "url": "https://chromium.googlesource.com/external/github.com/google/perfetto.git"
         },
         "fetcher": "fetchFromGitiles"
     },
     "src/third_party/protobuf-javascript/src": {
         "args": {
-            "hash": "sha256-zq86SrDASl6aYPFPijRZp03hJqXUFz2Al/KkiNq7i0M=",
-            "rev": "eb785a9363664a402b6336dfe96aad27fb33ffa8",
+            "hash": "sha256-c/aC+LZQtedL5oouUXw2eTF6xD7LN3J3C0q3D0wl+W0=",
+            "rev": "28bf5df73ef2f345a936d9cc95d64ba8ed426a53",
             "url": "https://chromium.googlesource.com/external/github.com/protocolbuffers/protobuf-javascript"
         },
         "fetcher": "fetchFromGitiles"
@@ -363,8 +371,8 @@
     },
     "src/tools": {
         "args": {
-            "hash": "sha256-Vmhd5kfPaOyPJaDSg67V64FSgi4maEVjXE4PMnxnIFw=",
-            "rev": "3460fbcdee33353d37800dad5caa6bba327ad8c8",
+            "hash": "sha256-j95oiK5+hhKC+NNQ27EVZugZI/n2QZJNRyz2QE4pVXc=",
+            "rev": "901b847deda65d44f1bba16a9f47e2ea68a805be",
             "url": "https://chromium.googlesource.com/chromium/src/tools"
         },
         "fetcher": "fetchFromGitiles"
diff --git a/pkgs/by-name/si/signal-desktop/webrtc.nix b/pkgs/by-name/si/signal-desktop/webrtc.nix
index 26c387438f6b..51cdca0cfde5 100644
--- a/pkgs/by-name/si/signal-desktop/webrtc.nix
+++ b/pkgs/by-name/si/signal-desktop/webrtc.nix
@@ -38,6 +38,10 @@ stdenv.mkDerivation (finalAttrs: {
     pulseaudio
   ];
 
+  patches = [
+    ./webrtc-fix-gcc-build.patch
+  ];
+
   postPatch = ''
     substituteInPlace build/toolchain/linux/BUILD.gn \
       --replace-fail 'toolprefix = "aarch64-linux-gnu-"' 'toolprefix = ""'
@@ -59,8 +63,9 @@ stdenv.mkDerivation (finalAttrs: {
     "use_sysroot=false"
     "is_clang=false"
     "treat_warnings_as_errors=false"
+    "use_llvm_libatomic=false"
 
-    # https://github.com/signalapp/ringrtc/blob/main/bin/build-electron
+    # https://github.com/signalapp/ringrtc/blob/main/bin/build-desktop
     "rtc_build_examples=false"
     "rtc_build_tools=false"
     "rtc_use_x11=false"