diff --git a/acme.sh b/acme.sh
index a2cfd9f7..87c55396 100755
--- a/acme.sh
+++ b/acme.sh
@@ -9,7 +9,7 @@ PROJECT_ENTRY="acme.sh"
 PROJECT="https://github.com/Neilpang/$PROJECT_NAME"
 
 DEFAULT_CA="https://acme-v01.api.letsencrypt.org"
-DEFAULT_AGREEMENT="https://letsencrypt.org/documents/LE-SA-v1.0.1-July-27-2015.pdf"
+DEFAULT_AGREEMENT="https://letsencrypt.org/documents/LE-SA-v1.1.1-August-1-2016.pdf"
 
 DEFAULT_USER_AGENT="$PROJECT_ENTRY client: $PROJECT"