diff --git a/.github/workflows/build-typescript-release.reusable.yaml b/.github/workflows/build-typescript-release.reusable.yaml
index a57f87fc0..8df43c8da 100644
--- a/.github/workflows/build-typescript-release.reusable.yaml
+++ b/.github/workflows/build-typescript-release.reusable.yaml
@@ -68,7 +68,7 @@ jobs:
               tar -xzf aarch64-linux-musl-cross.tgz
               echo "$PWD/aarch64-linux-musl-cross/bin" >> $GITHUB_PATH
               cat >>$GITHUB_ENV <<EOF
-              RUSTFLAGS="-C target-feature=-crt-static --cfg tracing_unstable"
+              RUSTFLAGS=-C target-feature=-crt-static --cfg tracing_unstable
               EOF
             node_build: pnpm build:napi-release --target aarch64-unknown-linux-musl --use-napi-cross
 
diff --git a/engine/language_client_ruby/ext/ruby_ffi/extconf.rb b/engine/language_client_ruby/ext/ruby_ffi/extconf.rb
index fb30ef854..0f497583e 100644
--- a/engine/language_client_ruby/ext/ruby_ffi/extconf.rb
+++ b/engine/language_client_ruby/ext/ruby_ffi/extconf.rb
@@ -10,6 +10,7 @@
 #    - GEM_NAME is the name of the gem in ext/baml
 create_rust_makefile("ruby_ffi") do |r|
   r.extra_cargo_args += ["--package", "ruby_ffi"]
+  r.extra_rustflags = ["--cfg=tracing_unstable"]
   r.env = {
     "MACOSX_DEPLOYMENT_TARGET" => "10.13",
   }