diff --git a/mozglue/static/rust/build.rs b/mozglue/static/rust/build.rs
index c5d246c63457..7e42b375e22c 100644
--- a/mozglue/static/rust/build.rs
+++ b/mozglue/static/rust/build.rs
@@ -16,7 +16,7 @@ fn main() {
     println!("cargo:rerun-if-changed=wrappers.cpp");
 
     let ver = version().unwrap();
-    let max_oom_hook_version = Version::parse("1.65.0-alpha").unwrap();
+    let max_oom_hook_version = Version::parse("1.66.0-alpha").unwrap();
 
     if ver < max_oom_hook_version {
         println!("cargo:rustc-cfg=feature=\"oom_with_hook\"");
diff --git a/taskcluster/ci/fetch/toolchains.yml b/taskcluster/ci/fetch/toolchains.yml
index d0668cfc9081..a7bbf886e1cf 100644
--- a/taskcluster/ci/fetch/toolchains.yml
+++ b/taskcluster/ci/fetch/toolchains.yml
@@ -372,13 +372,13 @@ clang-trunk:
 # We build stable rust from source so the resulting compiler acts as a nightly
 # rust compiler, allowing to use unstable features like -Zbuild-std and
 # sanitizers.
-rust-1.64.0:
-    description: Rust 1.64.0 source code
+rust-1.65.0:
+    description: Rust 1.65.0 source code
     fetch:
         type: git
         include-dot-git: true
         repo: https://github.com/rust-lang/rust/
-        revision: a55dd71d5fb0ec5a6a3a9e8c27b2127ba491ce52
+        revision: d939e5a3e5eb34dd1e828b9ad244ee6e6a0a989b
 
 wasi-sdk:
     description: wasi-sdk-16 source code
diff --git a/taskcluster/ci/toolchain/rust.yml b/taskcluster/ci/toolchain/rust.yml
index c03fe00b0e93..ce8a3128f173 100644
--- a/taskcluster/ci/toolchain/rust.yml
+++ b/taskcluster/ci/toolchain/rust.yml
@@ -38,12 +38,12 @@ linux64-rust-1.63:
         ]
         toolchain-alias: linux64-rust-base
 
-linux64-rust-1.64:
+linux64-rust-1.65:
     treeherder:
         symbol: TL(rust)
     run:
         arguments: [
-            '--channel', '1.64.0',
+            '--channel', '1.65.0',
             '--host', 'x86_64-unknown-linux-gnu',
             '--target', 'x86_64-unknown-linux-gnu',
             '--target', 'i686-unknown-linux-gnu',
@@ -73,19 +73,19 @@ linux64-rust-dev:
         ]
     fetches:
         fetch:
-            - rust-1.64.0
+            - rust-1.65.0
         toolchain:
             - linux64-clang-toolchain
             - linux64-binutils
 
 
-linux64-rust-cross-1.64:
+linux64-rust-cross-1.65:
     description: "rust repack with macos and windows cross support"
     treeherder:
         symbol: TL(rust-cross)
     run:
         arguments: [
-            '--channel', '1.64.0',
+            '--channel', '1.65.0',
             '--host', 'x86_64-unknown-linux-gnu',
             '--target', 'x86_64-unknown-linux-gnu',
             '--target', 'i686-unknown-linux-gnu',
@@ -102,13 +102,13 @@ linux64-rust-cross-1.64:
         ]
         toolchain-alias: linux64-rust-cross
 
-linux64-rust-static-1.64:
+linux64-rust-static-1.65:
     description: "rust repack with static linking support"
     treeherder:
         symbol: TL(rust-static)
     run:
         arguments: [
-            '--channel', '1.64.0',
+            '--channel', '1.65.0',
             '--host', 'x86_64-unknown-linux-gnu',
             '--target', 'aarch64-unknown-linux-musl',
             '--target', 'x86_64-unknown-linux-gnu',
@@ -132,13 +132,13 @@ linux64-rust-macos-1.61:
         ]
         toolchain-alias: linux64-rust-macos-toolchain
 
-linux64-rust-macos-1.64:
+linux64-rust-macos-1.65:
     description: "rust repack with macos-cross support"
     treeherder:
         symbol: TL(rust-macos)
     run:
         arguments: [
-            '--channel', '1.64.0',
+            '--channel', '1.65.0',
             '--host', 'x86_64-unknown-linux-gnu',
             '--target', 'x86_64-unknown-linux-gnu',
             '--target', 'x86_64-apple-darwin',
@@ -146,13 +146,13 @@ linux64-rust-macos-1.64:
         ]
         toolchain-alias: linux64-rust-macos
 
-linux64-rust-android-1.64:
+linux64-rust-android-1.65:
     description: "rust repack with android-cross support"
     treeherder:
         symbol: TL(rust-android)
     run:
         arguments: [
-            '--channel', '1.64.0',
+            '--channel', '1.65.0',
             '--host', 'x86_64-unknown-linux-gnu',
             '--target', 'x86_64-unknown-linux-gnu',
             '--target', 'armv7-linux-androideabi',
@@ -181,13 +181,13 @@ linux64-rust-windows-1.61:
         ]
         toolchain-alias: linux64-rust-windows-toolchain
 
-linux64-rust-windows-1.64:
+linux64-rust-windows-1.65:
     description: "rust repack with windows-cross support"
     treeherder:
         symbol: TL(rust-win)
     run:
         arguments: [
-            '--channel', '1.64.0',
+            '--channel', '1.65.0',
             '--host', 'x86_64-unknown-linux-gnu',
             '--target', 'x86_64-unknown-linux-gnu',
             '--target', 'x86_64-pc-windows-msvc',
@@ -209,12 +209,12 @@ win64-rust-1.61:
         ]
         toolchain-alias: win64-rust-toolchain
 
-win64-rust-1.64:
+win64-rust-1.65:
     treeherder:
         symbol: TW64(rust)
     run:
         arguments: [
-            '--channel', '1.64.0',
+            '--channel', '1.65.0',
             '--host', 'x86_64-pc-windows-msvc',
             '--target', 'x86_64-pc-windows-msvc',
             '--target', 'i686-pc-windows-msvc',
@@ -222,23 +222,23 @@ win64-rust-1.64:
         ]
         toolchain-alias: win64-rust
 
-macosx64-rust-1.64:
+macosx64-rust-1.65:
     treeherder:
         symbol: TM(rust)
     run:
         arguments: [
-            '--channel', '1.64.0',
+            '--channel', '1.65.0',
             '--host', 'x86_64-apple-darwin',
             '--target', 'x86_64-apple-darwin',
         ]
         toolchain-alias: macosx64-rust
 
-mingw32-rust-1.64:
+mingw32-rust-1.65:
     treeherder:
         symbol: TMW(rust)
     run:
         arguments: [
-            '--channel', '1.64.0',
+            '--channel', '1.65.0',
             '--host', 'x86_64-unknown-linux-gnu',
             '--target', 'i686-unknown-linux-gnu',
             '--target', 'i686-pc-windows-gnu',