diff --git a/LICENSE.addendum.txt b/LICENSE.addendum.txt
index 5f89abcf..47b6a10b 100644
--- a/LICENSE.addendum.txt
+++ b/LICENSE.addendum.txt
@@ -9,4 +9,14 @@ Linux kernel - GPL v2
  - linked list implementation
  - atomic_add, cmpxchg and friends implementation
 
+Internet Software Consortium (permissive license): Pal/lib/network/inet_pton.c
+
+MIT JOS (mix of MIT and BSD licenses:
+* Pal/lib/stdlib/printfmt.c
+
+A number of files taken from other C libraries:
+* glibc - LGPL
+* musl - MIT
+
 [incomplete: more to come]
+