diff --git a/MANIFEST.in b/MANIFEST.in
index 894cf039..332d7cfb 100644
--- a/MANIFEST.in
+++ b/MANIFEST.in
@@ -30,5 +30,7 @@ recursive-include third_party *
 global-exclude .git
 exclude .gitmodules
 exclude .clang-format
+include fasm/parser/libparse_fasm.*
+include fasm/parser/tags.py
 
 recursive-include fasm/parser *.tx
diff --git a/tox.ini b/tox.ini
index 16ee4af6..773bedff 100644
--- a/tox.ini
+++ b/tox.ini
@@ -35,4 +35,5 @@ per-file-ignores =
 
 [check-manifest]
 ignore =
-    fasm/tags.py
+    fasm/parser/tags.py
+    fasm/parser/libparse_fasm.*