diff --git a/docs/src/apireference.md b/docs/src/apireference.md
index 830a12a478..4af4ab6ef4 100644
--- a/docs/src/apireference.md
+++ b/docs/src/apireference.md
@@ -38,6 +38,8 @@ supports
 AbstractInstance
 AbstractStandaloneInstance
 AbstractSolverInstance
+isempty
+empty!
 write
 read!
 ```