diff --git a/THIRD_PARTY_CREDITS.md b/THIRD_PARTY_CREDITS.md
index 402f422d..af9e7aeb 100644
--- a/THIRD_PARTY_CREDITS.md
+++ b/THIRD_PARTY_CREDITS.md
@@ -1,6 +1,6 @@
 # Dependent crate license credit
 
-Licenses for dependent crate in this crate (`erg`) are reproduced below.
+Licenses for dependent crate in this crate (`erg`, ps: excluding `els`) are reproduced below.
 
 ## Note