diff --git a/git-hooks/pre-commit b/git-hooks/pre-commit
index 35c3290..8d84602 100755
--- a/git-hooks/pre-commit
+++ b/git-hooks/pre-commit
@@ -3,5 +3,5 @@
 set -e
 exec 1>&2
 
-fixcopyright.rkt -n --preset-typescript --file-pattern 'packages/**.ts' GPL-3.0-or-later
-fixcopyright.rkt -n --preset-javascript --file-pattern 'packages/**.js' GPL-3.0-or-later
+fixcopyright.rkt -n --preset-typescript --file-pattern 'packages/**.ts' --ignore '**/node_modules/**' GPL-3.0-or-later
+fixcopyright.rkt -n --preset-javascript --file-pattern 'packages/**.js' --ignore '**/node_modules/**' GPL-3.0-or-later