diff --git a/docs/Project.toml b/docs/Project.toml
index 2135863..34e72bd 100644
--- a/docs/Project.toml
+++ b/docs/Project.toml
@@ -4,4 +4,4 @@ HalfIntegers = "f0d1745a-41c9-11e9-1dd9-e5d34d218721"
 SaferIntegers = "88634af6-177f-5301-88b8-7819386cfa38"
 
 [compat]
-Documenter = "1"
+Documenter = "1.3"
diff --git a/docs/src/api.md b/docs/src/api.md
index 8aa0a94..3293df4 100644
--- a/docs/src/api.md
+++ b/docs/src/api.md
@@ -1,3 +1,7 @@
+```@meta
+CollapsedDocStrings = true
+```
+
 # API documentation
 
 ```@index