Add missing since annotations

2 files changed, 2 insertions, 0 deletions

diff --git a/lib/elixir/lib/calendar.ex b/lib/elixir/lib/calendar.ex
index 36776a971..4501e848b 100644
--- a/lib/elixir/lib/calendar.ex
+++ b/lib/elixir/lib/calendar.ex
@@ -501,6 +501,7 @@ defmodule Calendar do
       ...>)
       "август"
   """
+  @doc since: "1.11.0"
   @spec strftime(map(), String.t(), keyword()) :: String.t()
   def strftime(date_or_time_or_datetime, string_format, user_options \\ []) do
     parse(
diff --git a/lib/elixir/lib/task.ex b/lib/elixir/lib/task.ex
index 4184a2190..da2cdf974 100644
--- a/lib/elixir/lib/task.ex
+++ b/lib/elixir/lib/task.ex
@@ -648,6 +648,7 @@ defmodule Task do
       [2, 5]
 
   """
+  @doc since: "1.11.0"
   @spec await_many([t], timeout) :: [term]
   def await_many(tasks, timeout \\ 5000) when is_timeout(timeout) do
     awaiting =