diff --git a/web/run.py b/web/run.py
index 6f86aaa..5dccd4d 100755
--- a/web/run.py
+++ b/web/run.py
@@ -991,6 +991,7 @@ def download_targets_cdf(targets, started_at, stopped_at):
 
     if not isfile(cdf_path):
         log.debug("Creating the CDF file '%s'..." % cdf_filename)
+        environ['SPACEPY'] = CACHE_DIR
         environ['CDF_LIB'] = CDF_LIB
         from spacepy import pycdf
         try:
--
libgit2 0.21.2