diff --git a/api.go b/api.go
index 5c065b1..160c532 100644
--- a/api.go
+++ b/api.go
@@ -171,7 +171,7 @@ func apiNote(dir string, w http.ResponseWriter, r *http.Request, readOnly bool)
 			return
 		}
 
-		if !info.ModTime().UTC().Equal(notePatch.LastMtime.UTC()) {
+		if !info.ModTime().Truncate(time.Second).UTC().Equal(notePatch.LastMtime.Truncate(time.Second).UTC()) {
 			respondWithError(w, "Refusing to overwrite. File changed on disk.", http.StatusConflict)
 			return
 		}
@@ -230,7 +230,7 @@ func apiNote(dir string, w http.ResponseWriter, r *http.Request, readOnly bool)
 			return
 		}
 
-		if !info.ModTime().UTC().Equal(noteDelete.LastMtime.UTC()) {
+		if !info.ModTime().Truncate(time.Second).UTC().Equal(noteDelete.LastMtime.Truncate(time.Second).UTC()) {
 			respondWithError(w, "Refusing to delete. File changed on disk.", http.StatusConflict)
 			return
 		}
diff --git a/cache.go b/cache.go
index 059f7ea..a2b471e 100644
--- a/cache.go
+++ b/cache.go
@@ -85,7 +85,7 @@ func readNote(dir string, filename string) (*Note, error) {
 	if err != nil {
 		return nil, fmt.Errorf("could not get file info: %s", err)
 	}
-	mtime := info.ModTime()
+	mtime := info.ModTime().Truncate(time.Second)
 
 	hexTime := strings.TrimSuffix(filename, ".md")
 	unixTime, err := strconv.ParseInt(hexTime, 16, 64)