diff --git a/.github/workflows/dependencies.yaml b/.github/workflows/dependencies.yaml
index 255fecf..d741a13 100644
--- a/.github/workflows/dependencies.yaml
+++ b/.github/workflows/dependencies.yaml
@@ -15,7 +15,7 @@ jobs:
       - uses: actions/checkout@v4
       - uses: ./.github/actions/rust-toolchain
         with:
-          toolchain: 1.66
+          toolchain: 1.70
       - run: cargo install --locked cargo-audit
       - run: cargo audit
 
@@ -27,7 +27,7 @@ jobs:
       - uses: actions/checkout@v4
       - uses: ./.github/actions/rust-toolchain
         with:
-          toolchain: 1.66
+          toolchain: 1.70
       - run: cargo install --locked cargo-sort
       - run: cargo sort --workspace --check
 
diff --git a/.github/workflows/ffi.yaml b/.github/workflows/ffi.yaml
index 6a789c1..5074c25 100644
--- a/.github/workflows/ffi.yaml
+++ b/.github/workflows/ffi.yaml
@@ -11,7 +11,7 @@ jobs:
       - uses: actions/checkout@v4
       - uses: ./.github/actions/rust-toolchain
         with:
-          toolchain: 1.66
+          toolchain: 1.70
       - run: cargo install cbindgen@^0.24
       - run: |
           cbindgen --config ffi/cbindgen.toml \
@@ -33,7 +33,7 @@ jobs:
       - uses: actions/checkout@v4
       - uses: ./.github/actions/rust-toolchain
         with:
-          toolchain: 1.66
+          toolchain: 1.70
       - run: sudo apt-get install -y cmake nlohmann-json3-dev
       - run: |
           cmake -S ffi/integration/ \
diff --git a/.github/workflows/lint.yaml b/.github/workflows/lint.yaml
index 9824df9..0723347 100644
--- a/.github/workflows/lint.yaml
+++ b/.github/workflows/lint.yaml
@@ -18,7 +18,7 @@ jobs:
       - uses: actions/checkout@v4
       - uses: ./.github/actions/rust-toolchain
         with:
-          toolchain: 1.66
+          toolchain: 1.70
       - run: cargo check
       # The foundation-ffi crate won't compile for x86_64 targets because it
       # requires a nightly Rust compiler for defining a global allocator and
@@ -36,7 +36,7 @@ jobs:
       - uses: actions/checkout@v4
       - uses: ./.github/actions/rust-toolchain
         with:
-          toolchain: 1.66
+          toolchain: 1.70
           components: rustfmt
       - run: cargo fmt --all -- --check
 
@@ -48,7 +48,7 @@ jobs:
       - uses: actions/checkout@v4
       - uses: ./.github/actions/rust-toolchain
         with:
-          toolchain: 1.66
+          toolchain: 1.70
       - run: cargo test
       - run: cargo test --no-default-features
       - run: cargo test --all-features
diff --git a/README.md b/README.md
index a94d55d..bde9e88 100644
--- a/README.md
+++ b/README.md
@@ -8,7 +8,7 @@ SPDX-License-Identifier: GPL-3.0-or-later
 
 ## Minimum Supported Rust Version (MSRV).
 
-The minimum supported version Rust version is `1.65.0`.
+The minimum supported version Rust version is `1.70`.
 
 ## Licensing