diff --git a/CHANGELOG.md b/CHANGELOG.md
index 17930ad8..15e58c99 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+- Added go1.20.13, go1.21.6.
 ### Changed
 
 - Separated buildpack and supplementary binaries into independent crates. ([#200](https://github.com/heroku/buildpacks-go/pull/200))
diff --git a/buildpacks/go/inventory.toml b/buildpacks/go/inventory.toml
index 0099382f..8b599d95 100644
--- a/buildpacks/go/inventory.toml
+++ b/buildpacks/go/inventory.toml
@@ -4,6 +4,12 @@ semantic_version = "1.22.0-rc1"
 architecture = "linux-amd64"
 sha_checksum = "fbe9d0585b9322d44008f6baf78b391b22f64294338c6ce2b9eb6040d6373c52"
 
+[[artifacts]]
+go_version = "go1.21.6"
+semantic_version = "1.21.6"
+architecture = "linux-amd64"
+sha_checksum = "3f934f40ac360b9c01f616a9aa1796d227d8b0328bf64cb045c7b8c4ee9caea4"
+
 [[artifacts]]
 go_version = "go1.21.5"
 semantic_version = "1.21.5"
@@ -64,6 +70,12 @@ semantic_version = "1.21.0-rc1"
 architecture = "linux-amd64"
 sha_checksum = "d3f54a95b085cd6745fb306910b36670dac4e9e985c8f2920e6bcc35b9d7feb9"
 
+[[artifacts]]
+go_version = "go1.20.13"
+semantic_version = "1.20.13"
+architecture = "linux-amd64"
+sha_checksum = "9a9d3dcae2b6a638b1f2e9bd4db08ffb39c10e55d9696914002742d90f0047b5"
+
 [[artifacts]]
 go_version = "go1.20.12"
 semantic_version = "1.20.12"