diff --git a/taxcalc/__init__.py b/taxcalc/__init__.py
index 99296938d..9c86078b9 100644
--- a/taxcalc/__init__.py
+++ b/taxcalc/__init__.py
@@ -14,4 +14,4 @@
 from taxcalc.utils import *
 from taxcalc.cli import *
 
-__version__ = '4.2.2'
+__version__ = '4.2.2a'
diff --git a/taxcalc/records.py b/taxcalc/records.py
index 7b5a9936a..dcebf687f 100644
--- a/taxcalc/records.py
+++ b/taxcalc/records.py
@@ -246,7 +246,7 @@ def tmd_constructor(
         return Records(
             data=pd.read_csv(data_path),
             start_year=Records.TMDCSV_YEAR,
-            weights=str(weights_path),
+            weights=pd.read_csv(weights_path),
             gfactors=GrowFactors(growfactors_filename=str(growfactors_path)),
             adjust_ratios=None,
             exact_calculations=exact_calculations,