diff --git a/CHANGELOG.md b/CHANGELOG.md
index 44e381e6..c1ca9682 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,13 @@
 Adding:
 - lo.ValueOr
 - lo.DebounceBy
+- lo.EmptyableToPtr
+
+Improvement:
+- Substring: add support for non-english chars
+
+Fix:
+- Async: Fix goroutine leak
 
 ## 1.37.0 (2022-12-15)
 
diff --git a/slice.go b/slice.go
index 20fbfac6..49c991f8 100644
--- a/slice.go
+++ b/slice.go
@@ -51,6 +51,8 @@ func FilterMap[T any, R any](collection []T, callback func(item T, index int) (R
 }
 
 // FlatMap manipulates a slice and transforms and flattens it to a slice of another type.
+// The transform function can either return a slice or a `nil`, and in the `nil` case
+// no value is added to the final slice.
 // Play: https://go.dev/play/p/YSoYmQTA8-U
 func FlatMap[T any, R any](collection []T, iteratee func(item T, index int) []R) []R {
 	result := make([]R, 0, len(collection))