diff --git a/.cargo/config.toml b/.cargo/config.toml
index 86f4cdb9..a715dd88 100644
--- a/.cargo/config.toml
+++ b/.cargo/config.toml
@@ -8,6 +8,8 @@ rustflags = [
     "--cfg", "tokio_unstable",
     # uuid unstable is needed for zerocopy deserialize
     "--cfg", "uuid_unstable",
+    # parallel build frontend
+    "-Z", "threads=0",
 ]
 rustdocflags = [
     # potentially faster. https://github.com/aws/aws-graviton-getting-started/blob/main/rust.md
@@ -18,6 +20,8 @@ rustdocflags = [
     "--cfg", "tokio_unstable",
     # uuid unstable is needed for zerocopy deserialize
     "--cfg", "uuid_unstable",
+    # parallel build frontend
+    "-Z", "threads=0",
 ]
 
 [registries.crates-io]
diff --git a/docker/cargo-config.toml b/docker/cargo-config.toml
index 1ac0a631..d47d2e07 100644
--- a/docker/cargo-config.toml
+++ b/docker/cargo-config.toml
@@ -9,6 +9,8 @@ rustflags = [
     "--cfg", "tokio_unstable",
     # uuid unstable is needed for zerocopy deserialize
     "--cfg", "uuid_unstable",
+    # parallel build frontend
+    "-Z", "threads=0",
 ]
 
 [target.aarch64-unknown-linux-gnu]
@@ -24,4 +26,6 @@ rustflags = [
     "--cfg", "tokio_unstable",
     # uuid unstable is needed for zerocopy deserialize
     "--cfg", "uuid_unstable",
+    # parallel build frontend
+    "-Z", "threads=0",
 ]