diff --git a/Makefile b/Makefile
index 411feac..db24855 100644
--- a/Makefile
+++ b/Makefile
@@ -1,8 +1,4 @@
-build: build-heroku-18 build-heroku-20 build-heroku-22
-
-build-heroku-18:
-	@echo "Building nginx in Docker for heroku-18..."
-	@docker run -v $(shell pwd):/buildpack --rm -it -e "STACK=heroku-18" -w /buildpack heroku/heroku:18-build scripts/build_nginx /buildpack/nginx-heroku-18.tgz
+build: build-heroku-20 build-heroku-22
 
 build-heroku-20:
 	@echo "Building nginx in Docker for heroku-20..."
diff --git a/changelog.md b/changelog.md
index 38eef90..7cba677 100644
--- a/changelog.md
+++ b/changelog.md
@@ -4,6 +4,10 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [unlreleased] - XXXX-XX-XX
+### Changes
+- [heroku-18] Removed
+
 ## [1.10] - 2023-06-13
 ### Changes
 - New "Static site" preset config
diff --git a/nginx-heroku-18.tgz b/nginx-heroku-18.tgz
deleted file mode 100644
index 3ed12fc..0000000
Binary files a/nginx-heroku-18.tgz and /dev/null differ
diff --git a/readme.md b/readme.md
index 61663d0..f140c7e 100644
--- a/readme.md
+++ b/readme.md
@@ -19,7 +19,6 @@ These are auto-selected based on the app's stack at build time.
 
 | Heroku Stack | Nginx Version |
 |--------------|--------------:|
-| `Heroku-18` | `1.25.1` |
 | `Heroku-20` | `1.25.1` |
 | `Heroku-22` | `1.25.1` |
 
@@ -39,7 +38,7 @@ _Proxy is the original buildpack mode that is enabled by default, if the `config
 
 ### Solo mode (deprecated)
 
-This mode has been superceeded by [Static mode](static.md). 
+This mode has been superceeded by [Static mode](static.md).
 
 ## Custom Nginx usage