diff --git a/.gitignore b/.gitignore
index 5a6d8fc8..91208efc 100644
--- a/.gitignore
+++ b/.gitignore
@@ -4,7 +4,6 @@
 spf/data
 **/*.npy
 **/*.zip
-test_data
 test_data.zip
 test_data_dl.zip
 test_data.txt
@@ -20,4 +19,5 @@ test_data.txt
 **/*.tmp
 **/mav.*
 **/testdata*
-**/temp
\ No newline at end of file
+**/temp
+**/sessions*
\ No newline at end of file
diff --git a/requirements.txt b/requirements.txt
index ee7fe047..d3c99368 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -33,6 +33,7 @@ joblib==1.3.2
 kiwisolver==1.4.4
 libaio==0.9.1
 llvmlite==0.42.0
+lmdb==1.4.1
 lxml==5.1.0
 MarkupSafe==2.1.3
 matplotlib==3.7.2