diff --git a/lib/syntax/timestamp.ml b/lib/syntax/timestamp.ml
index 9eb39a6..b5a31d0 100644
--- a/lib/syntax/timestamp.ml
+++ b/lib/syntax/timestamp.ml
@@ -10,6 +10,7 @@ type date =
 type time =
   { hour : int
   ; min : int
+  ; second : int
   }
 [@@deriving yojson]
 
@@ -56,8 +57,12 @@ let null_date = { year = 0; month = 0; day = 0 }
 (* let null_time = {min= 0; hour= 0} *)
 
 let parse_time s =
-  try Scanf.sscanf s "%d:%d" (fun hour min -> Some { hour; min })
-  with _ -> None
+  try
+    Scanf.sscanf s "%d:%d:%d" (fun hour min second ->
+        Some { hour; min; second })
+  with _ -> (
+    try Scanf.sscanf s "%d:%d" (fun hour min -> Some { hour; min; second = 0 })
+    with _ -> None)
 
 let parse_date s =
   try
diff --git a/test/test_outline_markdown.ml b/test/test_outline_markdown.ml
index 2de6c2a..d2af3ba 100644
--- a/test/test_outline_markdown.ml
+++ b/test/test_outline_markdown.ml
@@ -518,7 +518,7 @@ let inline =
                         Timestamp.
                           { date = { year = 2004; month = 12; day = 25 }
                           ; wday = "Sat"
-                          ; time = Some { hour = 10; min = 0 }
+                          ; time = Some { hour = 10; min = 0; second = 0 }
                           ; repetition = None
                           ; active = true
                           })
@@ -574,7 +574,7 @@ let inline =
                         Timestamp.
                           { date = { year = 2004; month = 12; day = 25 }
                           ; wday = "Sat"
-                          ; time = Some { hour = 10; min = 0 }
+                          ; time = Some { hour = 10; min = 0; second = 0 }
                           ; repetition = None
                           ; active = true
                           })