diff --git a/Cargo.lock b/Cargo.lock
index 2d19d75..e3e68da 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1278,9 +1278,9 @@ checksum = "07e28edb80900c19c28f1072f2e8aeca7fa06b23cd4169cefe1af5aa3260783f"
 
 [[package]]
 name = "gimli"
-version = "0.32.2"
+version = "0.33.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "cc6298e594375a7fead9efd5568f0a46e6a154fb6a9bdcbe3c06946ffd81a5f6"
+checksum = "0bf7f043f89559805f8c7cacc432749b2fa0d0a0a9ee46ce47164ed5ba7f126c"
 dependencies = [
  "fallible-iterator",
  "stable_deref_trait",
@@ -3596,7 +3596,7 @@ dependencies = [
  "cpp_demangle",
  "fallible-iterator",
  "flate2",
- "gimli 0.32.2",
+ "gimli 0.33.0",
  "intervaltree",
  "lru 0.16.0",
  "memmap2",
diff --git a/Cargo.toml b/Cargo.toml
index afe95ad..596de21 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -2,7 +2,7 @@
 name = "devfiler"
 version = "0.14.0"
 edition = "2021"
-rust-version = "1.84.1"
+rust-version = "1.88.0"
 license = "Apache-2.0"
 
 [profile.dev]
diff --git a/flake.lock b/flake.lock
index e2a23d6..39e0655 100644
--- a/flake.lock
+++ b/flake.lock
@@ -2,11 +2,11 @@
   "nodes": {
     "crane": {
       "locked": {
-        "lastModified": 1752625801,
-        "narHash": "sha256-T1XWEFfw+iNrvlRczZS4BkaZJ5W3Z2Xp+31P2IShJj8=",
+        "lastModified": 1773189535,
+        "narHash": "sha256-E1G/Or6MWeP+L6mpQ0iTFLpzSzlpGrITfU2220Gq47g=",
         "owner": "ipetkov",
         "repo": "crane",
-        "rev": "471f8cd756349f4e86784ea10fdc9ccb91711fca",
+        "rev": "6fa2fb4cf4a89ba49fc9dd5a3eb6cde99d388269",
         "type": "github"
       },
       "original": {
@@ -35,11 +35,11 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1752620740,
-        "narHash": "sha256-f3pO+9lg66mV7IMmmIqG4PL3223TYMlnlw+pnpelbss=",
+        "lastModified": 1767313136,
+        "narHash": "sha256-16KkgfdYqjaeRGBaYsNrhPRRENs0qzkQVUooNHtoy2w=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "32a4e87942101f1c9f9865e04dc3ddb175f5f32e",
+        "rev": "ac62194c3917d5f474c1a844b6fd6da2db95077d",
         "type": "github"
       },
       "original": {
@@ -53,7 +53,28 @@
       "inputs": {
         "crane": "crane",
         "flake-utils": "flake-utils",
-        "nixpkgs": "nixpkgs"
+        "nixpkgs": "nixpkgs",
+        "rust-overlay": "rust-overlay"
+      }
+    },
+    "rust-overlay": {
+      "inputs": {
+        "nixpkgs": [
+          "nixpkgs"
+        ]
+      },
+      "locked": {
+        "lastModified": 1773284828,
+        "narHash": "sha256-0qI+a9z7KpYCBbp4ENN32b2tf0VmC3MhgFw1KAroqxQ=",
+        "owner": "oxalica",
+        "repo": "rust-overlay",
+        "rev": "2b18fe48d9a8a4ff3850d56b67cfe72f2a589237",
+        "type": "github"
+      },
+      "original": {
+        "owner": "oxalica",
+        "repo": "rust-overlay",
+        "type": "github"
       }
     },
     "systems": {
diff --git a/flake.nix b/flake.nix
index 4d9d26d..ba78891 100644
--- a/flake.nix
+++ b/flake.nix
@@ -4,11 +4,13 @@
   inputs = {
     nixpkgs.url = "github:NixOS/nixpkgs/nixos-25.05";
     flake-utils.url = "github:numtide/flake-utils";
+    rust-overlay.url = "github:oxalica/rust-overlay";
+    rust-overlay.inputs.nixpkgs.follows = "nixpkgs";
     crane.url = "github:ipetkov/crane";
     crane.inputs.nixpkgs.follows = "nixpkgs";
   };
 
-  outputs = { crane, flake-utils, nixpkgs, ... }:
+  outputs = { crane, flake-utils, nixpkgs, rust-overlay, ... }:
     flake-utils.lib.eachSystem [
       "aarch64-linux"
       "x86_64-linux"
@@ -17,13 +19,19 @@
     ]
       (system:
         let
-          pkgs = import nixpkgs { inherit system; };
+          pkgs = import nixpkgs {
+            inherit system;
+            overlays = [ rust-overlay.overlays.default ];
+          };
           llvm = pkgs.llvmPackages_16;
           stdenv = llvm.stdenv;
           lib = pkgs.lib;
           isLinux = stdenv.isLinux;
           isDarwin = stdenv.isDarwin;
-          craneLib = (crane.mkLib pkgs);
+
+          # Use Rust toolchain from rust-toolchain.toml (matches Cargo.toml rust-version)
+          rustToolchain = pkgs.rust-bin.fromRustupToolchainFile ./rust-toolchain.toml;
+          craneLib = (crane.mkLib pkgs).overrideToolchain rustToolchain;
 
           # Filter source tree to avoid unnecessary rebuilds.
           includedSuffixes = [
@@ -145,7 +153,12 @@
                 RUSTFLAGS = toString [
                   # Mold speeds up the build by a few seconds.
                   # It doesn't support macOS: only use it on Linux.
-                  (lib.optional isLinux "-Clink-arg=--ld-path=${pkgs.mold-wrapped}/bin/mold")
+                  # Use clang as the linker driver so --ld-path is recognized
+                  # (older GCC doesn't support that flag).
+                  (lib.optionals isLinux [
+                    "-Clinker=${llvm.clang}/bin/clang"
+                    "-Clink-arg=--ld-path=${pkgs.mold}/bin/mold"
+                  ])
 
                   # On Darwin, librocksdb-sys links C++ libraries in some weird
                   # way that doesn't work with `buildInputs`. Link it manually ...
diff --git a/opentelemetry-ebpf-profiler b/opentelemetry-ebpf-profiler
index 422ac29..63d24dc 160000
--- a/opentelemetry-ebpf-profiler
+++ b/opentelemetry-ebpf-profiler
@@ -1 +1 @@
-Subproject commit 422ac29bb87685fdfdcab3e0e7c77b1f31a3773c
+Subproject commit 63d24dc4dd7fd5e369bc2b2933fafba051e6194e
diff --git a/opentelemetry-proto b/opentelemetry-proto
index a895173..ca839c5 160000
--- a/opentelemetry-proto
+++ b/opentelemetry-proto
@@ -1 +1 @@
-Subproject commit a8951735f7801e8adfaec5c0ace9262771cfec6e
+Subproject commit ca839c51f706f5d53bfb46f06c3e90c3af3a52c6
diff --git a/rust-toolchain.toml b/rust-toolchain.toml
new file mode 100644
index 0000000..e88baf1
--- /dev/null
+++ b/rust-toolchain.toml
@@ -0,0 +1,2 @@
+[toolchain]
+channel = "1.88.0"