diff --git a/lua/pending/recur.lua b/lua/pending/recur.lua
index 46a5dd2..c0a2091 100644
--- a/lua/pending/recur.lua
+++ b/lua/pending/recur.lua
@@ -3,6 +3,7 @@
 ---@field interval integer
 ---@field byday? string[]
 ---@field from_completion boolean
+---@field _raw? string
 
 ---@class pending.recur
 local M = {}
@@ -101,12 +102,12 @@ local function advance_date(base_date, freq, interval)
       new_y = new_y + 1
     end
     local last_day = os.date('*t', os.time({ year = new_y, month = new_m + 1, day = 0 })) --[[@as osdate]]
-    local clamped_d = math.min(dn, last_day.day)
+    local clamped_d = math.min(dn, last_day.day --[[@as integer]])
     return os.date('%Y-%m-%d', os.time({ year = new_y, month = new_m, day = clamped_d })) --[[@as string]]
   elseif freq == 'yearly' then
     local new_y = yn + interval
     local last_day = os.date('*t', os.time({ year = new_y, month = mn + 1, day = 0 })) --[[@as osdate]]
-    local clamped_d = math.min(dn, last_day.day)
+    local clamped_d = math.min(dn, last_day.day --[[@as integer]])
     return os.date('%Y-%m-%d', os.time({ year = new_y, month = mn, day = clamped_d })) --[[@as string]]
   end
   return base_date