diff --git a/docs/src/combine.md b/docs/src/combine.md
index e6a3eef4..1edde22a 100644
--- a/docs/src/combine.md
+++ b/docs/src/combine.md
@@ -97,6 +97,10 @@ using Statistics
 collapse(cl, month, last, mean)
 ```
 
+```@docs
+collapse
+```
+
 ## `vcat`
 
 The `vcat` method is used to concatenate time series: if you have two