diff --git a/egs/librispeech/ASR/.prepare.sh.swp b/egs/librispeech/ASR/.prepare.sh.swp
new file mode 100644
index 000000000..7373a583b
Binary files /dev/null and b/egs/librispeech/ASR/.prepare.sh.swp differ
diff --git a/egs/librispeech/ASR/prepare.sh b/egs/librispeech/ASR/prepare.sh
index 6d254e977..cbc744180 100755
--- a/egs/librispeech/ASR/prepare.sh
+++ b/egs/librispeech/ASR/prepare.sh
@@ -5,7 +5,7 @@ export PROTOCOL_BUFFERS_PYTHON_IMPLEMENTATION=python
 
 set -eou pipefail
 
-nj=15
+nj=32
 stage=-1
 stop_stage=100