diff --git a/.gitignore b/.gitignore
index 93ccba0..03d183a 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,13 +1,15 @@
-.DS_Store
-.vscode
-git-*.txt
-node_modules
+_MTN/
+.DS_Store/
+.vscode/
+node_modules/
 package-lock.json
 pnpm-lock.yaml
-
-# Artifacts from parseRFC.js
-# Maybe we should commit this to the repo?
-rfc*
-
-# From updateOID.sh
+# Artifacts from release.sh
+sha256sums.asc
+# Artifacts from mirror_to_github.sh
+git-*.txt
+# Artifacts from updateOID.sh
 dumpasn1.cfg
+# Artifacts from parseRFC.js
+rfc/
+rfcdef.json
diff --git a/.mtn-ignore b/.mtn-ignore
index e1def3d..6ed9040 100644
--- a/.mtn-ignore
+++ b/.mtn-ignore
@@ -1,6 +1,14 @@
-.DS_Store
-.vscode
-git-*.txt
-node_modules
-package-lock.json
-pnpm-lock.yaml
+[.]DS_Store$
+[.]vscode$
+node_modules$
+package-lock[.]json
+pnpm-lock[.]yaml
+# Artifacts from release.sh
+sha256sums[.]asc
+# Artifacts from mirror_to_github.sh
+git-[^.]*[.]txt
+# Artifacts from updateOID.sh
+dumpasn1[.]cfg
+# Artifacts from parseRFC.js
+rfc$
+rfcdef[.]json