diff --git a/script/build.sh b/script/build.sh
index 4c21e31..30374ad 100755
--- a/script/build.sh
+++ b/script/build.sh
@@ -1,5 +1,7 @@
 #!/usr/bin/env bash
 
+set -eou pipefail
+
 cmake -S . -B ./build_clang_libcxx \
   -GNinja \
   -DCMAKE_BUILD_TYPE=Release \