diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 5b4a245..e326438 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -66,6 +66,12 @@ jobs:
     - name: Checkout
       uses: actions/checkout@v1
 
+    - name: Enable 2021 edition
+      run: |
+        echo 'cargo-features = ["edition2021"]' > /tmp/bliss-analyser-Cargo.toml
+        cat Cargo.toml >> /tmp/bliss-analyser-Cargo.toml
+        mv /tmp/bliss-analyser-Cargo.toml Cargo.toml
+
     - name: Build
       run: |
         docker run --rm -v $(pwd):/source dlecan/rust-crosscompiler-arm:stable
diff --git a/Cargo.toml b/Cargo.toml
index df315e9..0eee323 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,5 +1,3 @@
-cargo-features = ["edition2021"]
-
 [package]
 name = "bliss-analyser"
 version = "0.2.1"
diff --git a/docker/Dockerfile b/docker/Dockerfile
index f45577f..7f0add3 100644
--- a/docker/Dockerfile
+++ b/docker/Dockerfile
@@ -12,6 +12,7 @@ RUN apt-get install -y curl git build-essential gcc-multilib musl-tools musl-dev
 
 RUN curl https://sh.rustup.rs -sSf | sh -s -- -y
 ENV PATH="/root/.cargo/bin/:${PATH}"
+RUN rustup default nightly && rustup update
 RUN rustup target add aarch64-unknown-linux-gnu && \
     rustup target add arm-unknown-linux-gnueabihf