diff --git a/src/layers/normalise.jl b/src/layers/normalise.jl
index 5f9e116f29..51df2e02fc 100644
--- a/src/layers/normalise.jl
+++ b/src/layers/normalise.jl
@@ -51,6 +51,10 @@ end
 
 Dropout layer. In the forward pass, apply the [`Flux.dropout`](@ref) function on the input.
 
+To apply dropout along certain dimension(s), specify the `dims` keyword.
+e.g. `Dropout(p; dims = 3)` will randomly zero out entire channels on WHCN input
+(also called 2D dropout).
+
 Does nothing to the input once [`Flux.testmode!`](@ref) is `true`.
 """
 mutable struct Dropout{F,D}
@@ -420,4 +424,4 @@ function Base.show(io::IO, l::GroupNorm)
   print(io, "GroupNorm($(join(size(l.β), ", "))")
   (l.λ == identity) || print(io, ", λ = $(l.λ)")
   print(io, ")")
-end
\ No newline at end of file
+end