diff --git a/manifests/cheaha_groups.pp b/manifests/cheaha_groups.pp
index 2db7be43e4512fd8a55b91e9c59017134da825ea..27251e9078c568701d77f205e852af45c6af20aa 100644
--- a/manifests/cheaha_groups.pp
+++ b/manifests/cheaha_groups.pp
@@ -71,6 +71,7 @@ class users::cheaha_groups inherits users::virtual_groups
     Group["mhanby"],
     Group["microbio"],
     Group["mse"],
+    Group["napieralalab"],
     Group["nephrology"],
     Group["neurobiology"],
     Group["neurology"],
diff --git a/manifests/virtual_groups.pp b/manifests/virtual_groups.pp
index 3293b3fe777e0b990d07f98ccde20f7ad56c0a95..03b9686afda545b829e3831c02747d7612ed9fe0 100644
--- a/manifests/virtual_groups.pp
+++ b/manifests/virtual_groups.pp
@@ -448,6 +448,11 @@ class users::virtual_groups
     gid     => "1068",
     ensure  => "present",
   }
+  # Marek Napierala lab in the Stem Cell Institute, mnapiera@uab.edu: https://trac.uabgrid.uab.edu/atlab/ticket/853
+  @group { "napieralalab":
+    gid     => "1069",
+    ensure  => "present",
+  }
   # SSG users, kzhang uid and gid should eventually be changed to a larger number, too close to the base group numbers
   @group { "kzhang":
     gid     => "1117",
diff --git a/manifests/virtual_users.pp b/manifests/virtual_users.pp
index 5ff85fe90a99dcfdfa1c0e7a634d99e39c29419e..19567d79b6a531f5e1096363bb813c88b8daa7e6 100644
--- a/manifests/virtual_users.pp
+++ b/manifests/virtual_users.pp
@@ -6142,8 +6142,8 @@ class users::virtual_users
   @user { "mnapiera":
     ensure     => "present",
     uid        => "10631",
-    gid        => "medgenomics",
-    comment    => "Marek Napierala, mnapiera@uab.edu, MEDGENOMICS, Ludwine Messiaen (lmessiaen@uab.edu)",
+    gid        => "napieralalab",
+    comment    => "Marek Napierala, mnapiera@uab.edu, MEDGENOMICS, Marek Napierala (mnapiera@uab.edu)",
     managehome => true,
   }