diff --git a/pull_into_place/big_jobs.py b/pull_into_place/big_jobs.py
index a94be07..989c6af 100644
--- a/pull_into_place/big_jobs.py
+++ b/pull_into_place/big_jobs.py
@@ -80,6 +80,7 @@ def print_debug_info():
 
     print "Date:", datetime.now()
     print "Host:", gethostname()
+    print "Python:", sys.executable or 'unknown!'
     print "Command: JOB_ID={0[JOB_ID]} SGE_TASK_ID={0[SGE_TASK_ID]} {1}".format(
             os.environ, ' '.join(sys.argv))
     print