diff --git a/rust/sglang-grpc/Cargo.toml b/rust/sglang-grpc/Cargo.toml
index 9a223d072..37decfb4a 100644
--- a/rust/sglang-grpc/Cargo.toml
+++ b/rust/sglang-grpc/Cargo.toml
@@ -9,6 +9,8 @@ license.workspace = true
 # of the main sglang wheel at the given import path.
 [package.metadata.sglang]
 python-module = "sglang.srt.grpc._core"
+# Always build optimized, even for an editable install.
+debug = false
 
 [lib]
 # Unique per-crate artifact name (the shared workspace target/ dir cannot hold
diff --git a/rust/sglang-server/Cargo.toml b/rust/sglang-server/Cargo.toml
index bb022754a..9cca80a60 100644
--- a/rust/sglang-server/Cargo.toml
+++ b/rust/sglang-server/Cargo.toml
@@ -8,6 +8,8 @@ license.workspace = true
 # Consumed by python/setup.py: registers this crate as a PyO3 extension module.
 [package.metadata.sglang]
 python-module = "sglang.srt.server._core"
+# Always build optimized, even for an editable install.
+debug = false
 
 [lib]
 name = "sglang_server"