diff --git a/prointvar/utils.py b/prointvar/utils.py
index 25a9060..d03d577 100755
--- a/prointvar/utils.py
+++ b/prointvar/utils.py
@@ -20,6 +20,7 @@
 import shutil
 import logging
 import requests
+import requests_cache
 import numpy as np
 import pandas as pd
 from string import digits
@@ -35,6 +36,7 @@
 from prointvar.library import aa_codes_1to3_extended
 
 logger = logging.getLogger("prointvar")
+requests_cache.install_cache('prointvar')
 
 
 class Make:
diff --git a/requirements.txt b/requirements.txt
index 6357207..0637f53 100755
--- a/requirements.txt
+++ b/requirements.txt
@@ -13,4 +13,5 @@ lxml
 click
 click_log>=0.2.0
 responses
-scipy
\ No newline at end of file
+scipy
+requests_cache
\ No newline at end of file