diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index cea6ec378..04f00c08b 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -28,6 +28,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     steps:
       - uses: actions/checkout@v4
+      - uses: dtolnay/rust-toolchain@1.73.0
       - uses: taiki-e/upload-rust-binary-action@v1
         with:
           dry-run: ${{ !startsWith(github.ref, 'refs/tags/cli-v') }}
diff --git a/crates/astria-cli/Cargo.toml b/crates/astria-cli/Cargo.toml
index a030970b3..36c4511e4 100644
--- a/crates/astria-cli/Cargo.toml
+++ b/crates/astria-cli/Cargo.toml
@@ -2,6 +2,7 @@
 name = "astria-cli"
 version = "0.2.1"
 edition = "2021"
+rust-version = "1.73"
 
 [[bin]]
 name = "astria-cli"