diff --git a/all/ipv4.txt b/all/ipv4.txt
index 20465370..d9ad3c94 100644
--- a/all/ipv4.txt
+++ b/all/ipv4.txt
@@ -43734,6 +43734,7 @@
 54.15.0.0/16
 54.18.0.0/16
 54.20.0.0/15
+54.20.12.0/23
 54.25.0.0/21
 54.25.14.0/24
 54.25.15.0/24
diff --git a/amazon/ipv4.txt b/amazon/ipv4.txt
index 46b9e6a5..d2313f82 100644
--- a/amazon/ipv4.txt
+++ b/amazon/ipv4.txt
@@ -5195,6 +5195,7 @@
 54.6.0.0/16
 54.7.0.0/16
 54.20.0.0/15
+54.20.12.0/23
 54.25.0.0/21
 54.25.14.0/24
 54.25.15.0/24