diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 56685f69c4..ce1f2cbd85 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -38,18 +38,18 @@ jobs:
   format:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: dtolnay/rust-toolchain@master
         with:
           components: rustfmt
-          toolchain: nightly-2023-07-05
+          toolchain: nightly-2024-01-12
       - uses: Swatinem/rust-cache@v2
       - run: scripts/rust_fmt.sh --check
 
   clippy:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
       - uses: dtolnay/rust-toolchain@stable
         with:
           components: clippy
@@ -59,28 +59,25 @@ jobs:
   run-tests:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
-      - uses: actions-rs/toolchain@v1
-        with:
-          profile: minimal
-          toolchain: stable
+      - uses: actions/checkout@v4
+      - uses: dtolnay/rust-toolchain@stable
       - uses: Swatinem/rust-cache@v2
       - run: cargo test
 
   udeps:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: dtolnay/rust-toolchain@master
         name: "Rust Toolchain Setup"
         with:
-          toolchain: nightly-2023-07-05
+          toolchain: nightly-2024-01-12
       - uses: Swatinem/rust-cache@v2
         id: "cache-cargo"
       - if: ${{ steps.cache-cargo.outputs.cache-hit != 'true' }}
         name: "Download and run cargo-udeps"
         run: |
-          wget -O - -c https://github.com/est31/cargo-udeps/releases/download/v0.1.35/cargo-udeps-v0.1.35-x86_64-unknown-linux-gnu.tar.gz | tar -xz
+          wget -O - -c https://github.com/est31/cargo-udeps/releases/download/v0.1.45/cargo-udeps-v0.1.45-x86_64-unknown-linux-gnu.tar.gz | tar -xz
           cargo-udeps-*/cargo-udeps udeps
         env:
-          RUSTUP_TOOLCHAIN: nightly-2023-07-05
+          RUSTUP_TOOLCHAIN: nightly-2024-01-12
diff --git a/.github/workflows/compiled_cairo.yml b/.github/workflows/compiled_cairo.yml
index f57a42fa43..747c6349cf 100644
--- a/.github/workflows/compiled_cairo.yml
+++ b/.github/workflows/compiled_cairo.yml
@@ -19,11 +19,11 @@ jobs:
   verify_cairo_file_dependencies:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
-      - uses: actions-rs/toolchain@v1
+      - uses: actions/checkout@v4
+      - uses: dtolnay/rust-toolchain@master
         with:
           components: rustfmt
-          toolchain: nightly-2023-07-05
+          toolchain: nightly-2024-01-12
       - uses: Swatinem/rust-cache@v2
       - uses: actions/setup-python@v4
         with:
diff --git a/.github/workflows/coverage.yml b/.github/workflows/coverage.yml
index 8c9dd75bae..1e2bbc89e8 100644
--- a/.github/workflows/coverage.yml
+++ b/.github/workflows/coverage.yml
@@ -8,11 +8,8 @@ jobs:
     env:
       CARGO_TERM_COLOR: always
     steps:
-      - uses: actions/checkout@v3
-      - uses: actions-rs/toolchain@v1
-        with:
-          profile: minimal
-          toolchain: stable
+      - uses: actions/checkout@v4
+      - uses: dtolnay/rust-toolchain@stable
       - uses: Swatinem/rust-cache@v2
       - name: Install cargo-llvm-cov
         uses: taiki-e/install-action@cargo-llvm-cov
diff --git a/.github/workflows/post-merge.yml b/.github/workflows/post-merge.yml
index 6e66465aa7..b93bc4680d 100644
--- a/.github/workflows/post-merge.yml
+++ b/.github/workflows/post-merge.yml
@@ -9,11 +9,11 @@ jobs:
     if: github.event.pull_request.merged == true
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
-      - uses: actions-rs/toolchain@v1
+      - uses: actions/checkout@v4
+      - uses: dtolnay/rust-toolchain@master
         with:
           components: rustfmt
-          toolchain: nightly-2023-07-05
+          toolchain: nightly-2024-01-12
       - uses: Swatinem/rust-cache@v2
       - uses: actions/setup-python@v4
         with:
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
deleted file mode 100644
index df4dc75640..0000000000
--- a/.github/workflows/release.yml
+++ /dev/null
@@ -1,15 +0,0 @@
-name: Build Release
-
-on:
-  push:
-    tags:
-      - BLOCKIFIER-v[0-9].**
-
-jobs:
-  build_python_wheels:
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v2
-      - run: |
-          cd crates/native_blockifier/
-          ./build.sh
diff --git a/.github/workflows/verify-deps.yml b/.github/workflows/verify-deps.yml
index 8d469aae07..3d77332173 100644
--- a/.github/workflows/verify-deps.yml
+++ b/.github/workflows/verify-deps.yml
@@ -10,11 +10,8 @@ jobs:
     runs-on: ubuntu-latest
     continue-on-error: true
     steps:
-      - uses: actions/checkout@v3
-      - uses: actions-rs/toolchain@v1
-        with:
-          profile: minimal
-          toolchain: stable
+      - uses: actions/checkout@v4
+      - uses: dtolnay/rust-toolchain@stable
       - name: Update Dependencies
         run: cargo update --verbose
       - name: Build
diff --git a/scripts/rust_fmt.sh b/scripts/rust_fmt.sh
index a220c5944f..00c736e89c 100755
--- a/scripts/rust_fmt.sh
+++ b/scripts/rust_fmt.sh
@@ -1,3 +1,3 @@
 #!/bin/bash
 
-cargo +nightly-2023-07-05 fmt --all -- "$@"
+cargo +nightly-2024-01-12 fmt --all -- "$@"