diff --git a/Makefile b/Makefile
index fa7ebe1..7a95c81 100644
--- a/Makefile
+++ b/Makefile
@@ -21,7 +21,7 @@ DBADDR = "0.0.0.0:27017"  # don't use localhost
 # create it from env.default
 include env.local
 
-N_CORES = 1
+N_CORES = 2
 export
 
 .PHONY: python-env fill-database
diff --git a/src/pkg/cjvt-corpusparser b/src/pkg/cjvt-corpusparser
index f0b0aba..af4f604 160000
--- a/src/pkg/cjvt-corpusparser
+++ b/src/pkg/cjvt-corpusparser
@@ -1 +1 @@
-Subproject commit f0b0abac1bd32ad6e9e29e7b737e4162e28568c2
+Subproject commit af4f6045bb06d05f932a720f1802062bbdeebeb7