diff --git a/LICENSE_THIRD_PARTY.md b/LICENSE_THIRD_PARTY.md
index 34db2a6..76ac486 100644
--- a/LICENSE_THIRD_PARTY.md
+++ b/LICENSE_THIRD_PARTY.md
@@ -53,7 +53,7 @@ The code is under their license and restrictions.
 
 https://rdrr.io/cran/SIS/
 
-The code is under their license and restrictions. 
+The code is under their `GPL-2` license and restrictions.