diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 91fc4156976..6c6503cb736 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -18,7 +18,6 @@ jobs:
       fail-fast: false
     steps:
       - uses: actions/checkout@v2
-      - run: rustup toolchain install 1.46.0 && rustup default 1.46.0
       - run: cargo install --version 0.30.0 cargo-make
       - run: cargo install --version 0.6.6 cargo-deny --no-default-features
       - run: cargo make -e BUILDSYS_VARIANT=${{ matrix.variant }} unit-tests
diff --git a/packages/Cargo.toml b/packages/Cargo.toml
index f1479851707..72ffa6fa833 100644
--- a/packages/Cargo.toml
+++ b/packages/Cargo.toml
@@ -76,3 +76,6 @@ members = [
 [profile.dev]
 debug = false
 opt-level = 'z'
+
+[profile.dev.build-override]
+opt-level = 'z'