diff --git a/modules/lamassu-lnbits.nix b/modules/lamassu-lnbits.nix
index 45e62b4..aff78be 100644
--- a/modules/lamassu-lnbits.nix
+++ b/modules/lamassu-lnbits.nix
@@ -302,6 +302,7 @@ in
         git
         coreutils
         gnused
+        bash               # Provides sh for node-gyp
         util-linux         # for setsid
         # Native build tools for node-gyp (required for utf-8-validate, bufferutil, etc.)
         stdenv.cc          # Full C/C++ toolchain with headers
@@ -427,9 +428,10 @@ in
         done
 
         echo "==> Building project..."
-        # Bypass pnpm and call turbo directly to avoid pnpm signal handling issues
+        # Use setsid to run turbo in a new session, isolating it from signal propagation
+        # This prevents pnpm's signal handling issues (exit code -2) when turbo calls pnpm run build
         # See: https://github.com/pnpm/pnpm/issues/7374
-        ./node_modules/.bin/turbo build
+        setsid --wait ./node_modules/.bin/turbo build
 
         echo "==> Linking admin UI static files..."
         cd packages/server