diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index f271904..58cab10 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -8,7 +8,7 @@ on:
 
 env:
   CARGO_TERM_COLOR: always
-  RUST_VERSION: "1.94.0"
+  RUST_VERSION: "1.96.0"
 
 jobs:
   check:
diff --git a/.github/workflows/coverage.yml b/.github/workflows/coverage.yml
index 8680f75..0c1e52b 100644
--- a/.github/workflows/coverage.yml
+++ b/.github/workflows/coverage.yml
@@ -9,7 +9,7 @@ on:
 
 env:
   CARGO_TERM_COLOR: always
-  RUST_VERSION: "1.94.0"
+  RUST_VERSION: "1.96.0"
   # Coverage floor (Extension Release Checklist §4)
   COVERAGE_FLOOR: "80"
 
diff --git a/.github/workflows/security.yml b/.github/workflows/security.yml
index 3b2e7c5..d9f5f5c 100644
--- a/.github/workflows/security.yml
+++ b/.github/workflows/security.yml
@@ -19,7 +19,7 @@ jobs:
       - uses: actions/checkout@v5
       - uses: dtolnay/rust-toolchain@stable
         with:
-          toolchain: "1.94.0"
+          toolchain: "1.96.0"
       - uses: taiki-e/install-action@v2
         with:
           tool: cargo-audit
diff --git a/.github/workflows/stability.yml b/.github/workflows/stability.yml
index 930ea28..e95d246 100644
--- a/.github/workflows/stability.yml
+++ b/.github/workflows/stability.yml
@@ -8,7 +8,7 @@ on:
 
 env:
   CARGO_TERM_COLOR: always
-  RUST_VERSION: "1.94.0"
+  RUST_VERSION: "1.96.0"
 
 jobs:
   bench-compile:
diff --git a/CLAUDE.md b/CLAUDE.md
index b0b3ecb..60ecad5 100644
--- a/CLAUDE.md
+++ b/CLAUDE.md
@@ -22,7 +22,7 @@ Read and follow `AGENTS.md` — it is the canonical project documentation.
 This extension targets:
 
 - Converge >= 3.9.1
-- MSRV 1.94.0
+- MSRV 1.96.0
 - Edition 2024
 - `unsafe_code = "forbid"`
 
diff --git a/Cargo.toml b/Cargo.toml
index b72dbe2..a8c4419 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -5,7 +5,7 @@ members = ["crates/manifold"]
 [workspace.package]
 version = "1.1.2"
 edition = "2024"
-rust-version = "1.94.0"
+rust-version = "1.96.0"
 license = "MIT"
 repository = "https://github.com/Reflective-Lab/manifold-adapters"
 
diff --git a/README.md b/README.md
index cbebcf2..4e73424 100644
--- a/README.md
+++ b/README.md
@@ -7,7 +7,7 @@
 [![Crates.io](https://img.shields.io/crates/v/converge-manifold-adapters.svg)](https://crates.io/crates/converge-manifold-adapters)
 [![docs.rs](https://docs.rs/converge-manifold-adapters/badge.svg)](https://docs.rs/converge-manifold-adapters)
 [![dependency status](https://deps.rs/repo/github/Reflective-Lab/manifold-adapters/status.svg)](https://deps.rs/repo/github/Reflective-Lab/manifold-adapters)
-![MSRV](https://img.shields.io/badge/MSRV-1.94.0-blue)
+![MSRV](https://img.shields.io/badge/MSRV-1.96.0-blue)
 <img alt="gitleaks badge" src="https://img.shields.io/badge/protected%20by-gitleaks-blue">
 [![License: MIT](https://img.shields.io/badge/License-MIT-yellow.svg)](LICENSE)
 
diff --git a/rust-toolchain.toml b/rust-toolchain.toml
new file mode 100644
index 0000000..37ae2e0
--- /dev/null
+++ b/rust-toolchain.toml
@@ -0,0 +1,7 @@
+# Pin rustc to a specific stable release so trybuild fixtures, clippy lints,
+# and macro-expansion output stay deterministic across contributor machines
+# and CI runners. Aligned with the workspace MSRV (Cargo.toml
+# [workspace.package] rust-version).
+[toolchain]
+channel = "1.96.0"
+components = ["rustfmt", "clippy"]