diff --git a/CHANGELOG.md b/CHANGELOG.md
index bbea095..1957c03 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,16 @@
 - [Amazon Linux 2 release notes](https://docs.aws.amazon.com/AL2/latest/relnotes/relnotes-al2.html)
 - [Amazon Linux AMI 2018.03 Release Notes](https://aws.amazon.com/amazon-linux-ami/2018.03-release-notes/) 
 
+## 20230731
+- source al1 ami: amzn-ami-minimal-hvm-2018.03.0.20230724.0-x86_64-ebs
+- source al2 ami: amzn2-ami-minimal-hvm-2.0.20230727.0-x86_64-ebs
+- source al2 arm ami: amzn2-ami-minimal-hvm-2.0.20230727.0-arm64-ebs
+- source al2 kernel 5.10 ami: amzn2-ami-minimal-hvm-2.0.20230727.0-x86_64-ebs
+- source al2 kernel 5.10 arm ami: amzn2-ami-minimal-hvm-2.0.20230727.0-arm64-ebs
+- source al2023 ami: al2023-ami-minimal-2023.1.20230725.0-kernel-6.1-x86_64
+- source al2023 arm ami: al2023-ami-minimal-2023.1.20230725.0-kernel-6.1-arm64
+- distribution al2023 release: 2023.1.20230725
+
 ## 20230720
 - ecs version: 1.74.1-1
 - source al2023 ami: al2023-ami-minimal-2023.1.20230719.0-kernel-6.1-x86_64
diff --git a/release.auto.pkrvars.hcl b/release.auto.pkrvars.hcl
index 874ccb5..6b69a45 100644
--- a/release.auto.pkrvars.hcl
+++ b/release.auto.pkrvars.hcl
@@ -1,17 +1,17 @@
-ami_version                   = "20230720"
+ami_version                   = "20230731"
 ecs_agent_version             = "1.74.1"
 ecs_init_rev                  = "1"
 docker_version                = "20.10.23"
 docker_version_al2023         = "20.10.23"
 containerd_version            = "1.6.19"
 containerd_version_al2023     = "1.6.19"
-source_ami_al1                = "amzn-ami-minimal-hvm-2018.03.0.20230628.0-x86_64-ebs"
-source_ami_al2                = "amzn2-ami-minimal-hvm-2.0.20230628.0-x86_64-ebs"
-source_ami_al2arm             = "amzn2-ami-minimal-hvm-2.0.20230628.0-arm64-ebs"
-source_ami_al2kernel5dot10    = "amzn2-ami-minimal-hvm-2.0.20230628.0-x86_64-ebs"
-source_ami_al2kernel5dot10arm = "amzn2-ami-minimal-hvm-2.0.20230628.0-arm64-ebs"
-source_ami_al2023             = "al2023-ami-minimal-2023.1.20230719.0-kernel-6.1-x86_64"
-source_ami_al2023arm          = "al2023-ami-minimal-2023.1.20230719.0-kernel-6.1-arm64"
+source_ami_al1                = "amzn-ami-minimal-hvm-2018.03.0.20230724.0-x86_64-ebs"
+source_ami_al2                = "amzn2-ami-minimal-hvm-2.0.20230727.0-x86_64-ebs"
+source_ami_al2arm             = "amzn2-ami-minimal-hvm-2.0.20230727.0-arm64-ebs"
+source_ami_al2kernel5dot10    = "amzn2-ami-minimal-hvm-2.0.20230727.0-x86_64-ebs"
+source_ami_al2kernel5dot10arm = "amzn2-ami-minimal-hvm-2.0.20230727.0-arm64-ebs"
+source_ami_al2023             = "al2023-ami-minimal-2023.1.20230725.0-kernel-6.1-x86_64"
+source_ami_al2023arm          = "al2023-ami-minimal-2023.1.20230725.0-kernel-6.1-arm64"
 kernel_version_al2023         = "-kernel-6.1"
 kernel_version_al2023arm      = "-kernel-6.1"
-distribution_release_al2023   = "2023.1.20230719"
+distribution_release_al2023   = "2023.1.20230725"