diff --git a/scripts/install_pil.sh b/scripts/install_pil.sh
index a5e1023e6..ccd55f619 100755
--- a/scripts/install_pil.sh
+++ b/scripts/install_pil.sh
@@ -4,5 +4,5 @@ set -e
 set -u
 
 if python -c 'import sys; sys.exit(0 if sys.hexversion<0x03000000 else 1)'; then
-  pip install --allow-all-external PIL
+  pip install --allow-external PIL --allow-unverified PIL PIL
 fi