diff --git a/auxbin/jpm b/auxbin/jpm
index e1bebbe5..94c1f6fe 100755
--- a/auxbin/jpm
+++ b/auxbin/jpm
@@ -683,14 +683,12 @@ int main(int argc, const char **argv) {
   (def cwd (os/cwd))
   (def packages @[])
   # Read installed modules from manifests
-  (os/cd (find-manifest-dir))
-  (defer (os/cd cwd)
-    (each man (os/dir ".")
-      (def package (parse (slurp man)))
-      (if (or (not package :repo) (not package :sha))
-        (print "Cannot add local package " man " to lockfile, skipping...")
-        (array/push packages package))
-      (os/cd "..")))
+  (def mdir (find-manifest-dir))
+  (each man (os/dir mdir)
+    (def package (parse (slurp (string mdir sep man))))
+    (if (or (not (package :repo)) (not (package :sha)))
+      (print "Cannot add local package " man " to lockfile, skipping...")
+      (array/push packages package)))
   # Put in correct order, such that a package is preceded by all of its dependencies
   (def ordered-packages @[])
   (def resolved @{})