diff --git a/gen3/external/nih/utils.py b/gen3/external/nih/utils.py
index e01eb304..e07cfcc6 100644
--- a/gen3/external/nih/utils.py
+++ b/gen3/external/nih/utils.py
@@ -7,8 +7,8 @@
 # For more details about this regex, see the function that uses it
 DBGAP_ACCESSION_REGEX = (
     "(?P<phsid>phs(?P<phsid_number>[0-9]+))"
-    "(.(?P<participant_set>p(?P<participant_set_number>[0-9]+))){0,1}"
     "(.(?P<version>v(?P<version_number>[0-9]+))){0,1}"
+    "(.(?P<participant_set>p(?P<participant_set_number>[0-9]+))){0,1}"
     "(.(?P<consent>c(?P<consent_number>[0-9]+)+)){0,1}"
 )