diff --git a/.github/workflows/build_rpi3.yml b/.github/workflows/build_rpi3.yml
index 08c96d9e..89467cff 100644
--- a/.github/workflows/build_rpi3.yml
+++ b/.github/workflows/build_rpi3.yml
@@ -32,8 +32,7 @@ jobs:
     - name: Set up Rust nightly
       run: |
           rustup self update
-          rustup toolchain install nightly --component rust-src llvm-tools-preview
-          rustup default nightly
+          rustup toolchain install `cat rust-toolchain | tr '\n' ' '` --component rust-src llvm-tools-preview
           cargo install cargo-xbuild cargo-binutils
     - name: Make all
       run: |
diff --git a/.github/workflows/build_rpi4.yml b/.github/workflows/build_rpi4.yml
index 6d23070b..2c8761d0 100644
--- a/.github/workflows/build_rpi4.yml
+++ b/.github/workflows/build_rpi4.yml
@@ -32,8 +32,7 @@ jobs:
     - name: Set up Rust nightly
       run: |
           rustup self update
-          rustup toolchain install nightly --component rust-src llvm-tools-preview
-          rustup default nightly
+          rustup toolchain install `cat rust-toolchain | tr '\n' ' '` --component rust-src llvm-tools-preview
           cargo install cargo-xbuild cargo-binutils
     - name: Make all
       run: |
diff --git a/.github/workflows/check_fmt_clippy.yml b/.github/workflows/check_fmt_clippy.yml
index ef3d95b6..d6f54374 100644
--- a/.github/workflows/check_fmt_clippy.yml
+++ b/.github/workflows/check_fmt_clippy.yml
@@ -30,8 +30,7 @@ jobs:
     - name: Set up Rust nightly
       run: |
           rustup self update
-          rustup toolchain install nightly --component rustfmt clippy rust-src
-          rustup default nightly
+          rustup toolchain install `cat rust-toolchain | tr '\n' ' '` --component rustfmt clippy rust-src
           cargo install cargo-xbuild
     - name: Run cargo fmt
       run: |