diff --git a/pkgs/development/libraries/cxx-rs/Cargo.lock b/pkgs/development/libraries/cxx-rs/Cargo.lock
index 70bd50ec869..157563e60f9 100644
--- a/pkgs/development/libraries/cxx-rs/Cargo.lock
+++ b/pkgs/development/libraries/cxx-rs/Cargo.lock
@@ -79,7 +79,7 @@ dependencies = [
 
 [[package]]
 name = "cxx"
-version = "1.0.86"
+version = "1.0.94"
 dependencies = [
  "cc",
  "cxx-build",
@@ -94,7 +94,7 @@ dependencies = [
 
 [[package]]
 name = "cxx-build"
-version = "1.0.86"
+version = "1.0.94"
 dependencies = [
  "cc",
  "codespan-reporting",
@@ -105,17 +105,17 @@ dependencies = [
  "proc-macro2",
  "quote",
  "scratch",
- "syn",
+ "syn 2.0.15",
 ]
 
 [[package]]
 name = "cxx-gen"
-version = "0.7.86"
+version = "0.7.94"
 dependencies = [
  "codespan-reporting",
  "proc-macro2",
  "quote",
- "syn",
+ "syn 2.0.15",
 ]
 
 [[package]]
@@ -129,22 +129,22 @@ dependencies = [
 
 [[package]]
 name = "cxxbridge-cmd"
-version = "1.0.86"
+version = "1.0.94"
 dependencies = [
  "clap",
  "codespan-reporting",
  "proc-macro2",
  "quote",
- "syn",
+ "syn 2.0.15",
 ]
 
 [[package]]
 name = "cxxbridge-flags"
-version = "1.0.86"
+version = "1.0.94"
 
 [[package]]
 name = "cxxbridge-macro"
-version = "1.0.86"
+version = "1.0.94"
 dependencies = [
  "clang-ast",
  "cxx",
@@ -154,7 +154,7 @@ dependencies = [
  "quote",
  "serde",
  "serde_json",
- "syn",
+ "syn 2.0.15",
 ]
 
 [[package]]
@@ -256,18 +256,18 @@ checksum = "6ac9a59f73473f1b8d852421e59e64809f025994837ef743615c6d0c5b305160"
 
 [[package]]
 name = "proc-macro2"
-version = "1.0.49"
+version = "1.0.56"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "57a8eca9f9c4ffde41714334dee777596264c7825420f521abc92b5b5deb63a5"
+checksum = "2b63bdb0cd06f1f4dedf69b254734f9b45af66e4a031e42a7480257d9898b435"
 dependencies = [
  "unicode-ident",
 ]
 
 [[package]]
 name = "quote"
-version = "1.0.23"
+version = "1.0.26"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8856d8364d252a14d474036ea1358d63c9e6965c8e5c1885c18f73d70bff9c7b"
+checksum = "4424af4bf778aae2051a77b60283332f386554255d722233d09fbfc7e30da2fc"
 dependencies = [
  "proc-macro2",
 ]
@@ -307,7 +307,7 @@ checksum = "af487d118eecd09402d70a5d72551860e788df87b464af30e5ea6a38c75c541e"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn",
+ "syn 1.0.107",
 ]
 
 [[package]]
@@ -338,6 +338,17 @@ dependencies = [
  "unicode-ident",
 ]
 
+[[package]]
+name = "syn"
+version = "2.0.15"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a34fcf3e8b60f57e6a14301a2e916d323af98b0ea63c599441eec8558660c822"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "unicode-ident",
+]
+
 [[package]]
 name = "termcolor"
 version = "1.1.3"
diff --git a/pkgs/development/libraries/cxx-rs/default.nix b/pkgs/development/libraries/cxx-rs/default.nix
index 253e7063504..c06171e72ce 100644
--- a/pkgs/development/libraries/cxx-rs/default.nix
+++ b/pkgs/development/libraries/cxx-rs/default.nix
@@ -2,13 +2,13 @@
 
 rustPlatform.buildRustPackage rec {
   pname = "cxx-rs";
-  version = "1.0.86";
+  version = "1.0.94";
 
   src = fetchFromGitHub {
     owner = "dtolnay";
     repo = "cxx";
     rev = version;
-    sha256 = "sha256-bysuvCapesU/HaNfTfMUas7g3clf8299HmCChpd7abY=";
+    sha256 = "sha256-h6TmQyxhoOhaAWBZr9rRPCf0BE2QMBIYm5uTVKD2paE=";
   };
 
   cargoLock = {