diff --git a/CHANGELOG.txt b/CHANGELOG.txt
index 649c0f2..4623f6f 100644
--- a/CHANGELOG.txt
+++ b/CHANGELOG.txt
@@ -1,3 +1,7 @@
+3.1.2
+* bug fix for when csv_dir, psd_dir, and/or pdf_dir are blank
+* replaced test_data/RESP.KAPI.II.00.BHZ.txt to a functional resp file
+
 3.1.1
  * updated conda package versions when running './run_ispaq.py -U'
 
diff --git a/ispaq/ispaq.py b/ispaq/ispaq.py
index 7d56634..2f90c43 100644
--- a/ispaq/ispaq.py
+++ b/ispaq/ispaq.py
@@ -15,7 +15,7 @@
 from _ast import Try
 from numpy.random import sample
 
-__version__ = "3.1.1"
+__version__ = "3.1.2"
 
 # dictionary of currently defined ISPAQ metric groups and business logic
 # for comparison with R package IRISMustangMetrics/ISPAQUtils.R json