diff --git a/.npmignore b/.npmignore
index 6812b42..44f0fb4 100644
--- a/.npmignore
+++ b/.npmignore
@@ -1 +1,3 @@
 test_files/*.tsv
+.gitignore
+node_modules/
diff --git a/frac.md b/frac.md
index 5c02469..01e0ef2 100644
--- a/frac.md
+++ b/frac.md
@@ -247,11 +247,16 @@ test:
 ```
 
 And to make sure that test files are not included in npm:
+
 ```>.npmignore
 test_files/*.tsv
+.gitignore
+node_modules/
 ```
 
+Don't include the node modules in git:
+
 ```>.gitignore
 .gitignore
-.npmignore
+node_modules/
 ```