diff --git a/.github/workflows/build-binaries.yml b/.github/workflows/build-binaries.yml
index 21648834b..8bfdc2682 100644
--- a/.github/workflows/build-binaries.yml
+++ b/.github/workflows/build-binaries.yml
@@ -31,7 +31,6 @@ env:
   CARGO_NET_RETRY: 10
   CARGO_TERM_COLOR: always
   RUSTUP_MAX_RETRIES: 10
-  MATURIN_VERSION: "1.4.0"
 
 jobs:
   sdist:
@@ -47,7 +46,6 @@ jobs:
       - name: "Build sdist"
         uses: PyO3/maturin-action@v1
         with:
-          maturin-version: ${{ env.MATURIN_VERSION }}
           command: sdist
           args: --out dist
       - name: "Test sdist"
@@ -75,7 +73,6 @@ jobs:
       - name: "Build wheels - x86_64"
         uses: PyO3/maturin-action@v1
         with:
-          maturin-version: ${{ env.MATURIN_VERSION }}
           target: x86_64
           args: --release --locked --out dist
       - name: "Upload wheels"
@@ -115,7 +112,6 @@ jobs:
       - name: "Build wheels - universal2"
         uses: PyO3/maturin-action@v1
         with:
-          maturin-version: ${{ env.MATURIN_VERSION }}
           args: --release --locked --target universal2-apple-darwin --out dist
       - name: "Test wheel - universal2"
         run: |
@@ -166,7 +162,6 @@ jobs:
       - name: "Build wheels"
         uses: PyO3/maturin-action@v1
         with:
-          maturin-version: ${{ env.MATURIN_VERSION }}
           target: ${{ matrix.platform.target }}
           args: --release --locked --out dist
       - name: "Test wheel"
@@ -214,7 +209,6 @@ jobs:
       - name: "Build wheels"
         uses: PyO3/maturin-action@v1
         with:
-          maturin-version: ${{ env.MATURIN_VERSION }}
           target: ${{ matrix.target }}
           manylinux: auto
           args: --release --locked --out dist
@@ -289,7 +283,6 @@ jobs:
       - name: "Build wheels"
         uses: PyO3/maturin-action@v1
         with:
-          maturin-version: ${{ env.MATURIN_VERSION }}
           target: ${{ matrix.platform.target }}
           manylinux: 2_28
           docker-options: ${{ matrix.platform.maturin_docker_options }}
@@ -355,7 +348,6 @@ jobs:
       - name: "Build wheels"
         uses: PyO3/maturin-action@v1
         with:
-          maturin-version: ${{ env.MATURIN_VERSION }}
           target: ${{ matrix.platform.target }}
           manylinux: auto
           docker-options: ${{ matrix.platform.maturin_docker_options }}
@@ -423,7 +415,6 @@ jobs:
       - name: "Build wheels"
         uses: PyO3/maturin-action@v1
         with:
-          maturin-version: ${{ env.MATURIN_VERSION }}
           target: ${{ matrix.platform.target }}
           manylinux: auto
           docker-options: ${{ matrix.platform.maturin_docker_options }}
@@ -494,7 +485,6 @@ jobs:
       - name: "Build wheels"
         uses: PyO3/maturin-action@v1
         with:
-          maturin-version: ${{ env.MATURIN_VERSION }}
           target: ${{ matrix.target }}
           manylinux: musllinux_1_2
           args: --release --locked --out dist
@@ -557,7 +547,6 @@ jobs:
       - name: "Build wheels"
         uses: PyO3/maturin-action@v1
         with:
-          maturin-version: ${{ env.MATURIN_VERSION }}
           target: ${{ matrix.platform.target }}
           manylinux: musllinux_1_2
           args: --release --locked --out dist