diff --git a/.github/workflows/deploy.yml b/.github/workflows/deploy.yml
index b9df95c..11101c4 100644
--- a/.github/workflows/deploy.yml
+++ b/.github/workflows/deploy.yml
@@ -11,7 +11,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        series: [8x_1, 8x_2]
+        series: [8x_1, 8x_2, 9x]
     steps:
     - uses: actions/checkout@master
     - run: ./build.sh ${{ matrix.series }}
diff --git a/.github/workflows/pr.yml b/.github/workflows/pr.yml
index a983a68..3058ee6 100644
--- a/.github/workflows/pr.yml
+++ b/.github/workflows/pr.yml
@@ -7,7 +7,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        series: [8x_1, 8x_2, snapshot]
+        series: [8x_1, 8x_2, 9x, snapshot]
     steps:
     - uses: actions/checkout@master
     - run: ./build.sh ${{ matrix.series }}
diff --git a/README.md b/README.md
index 70d10b5..14a8c74 100644
--- a/README.md
+++ b/README.md
@@ -1,9 +1,9 @@
 # racket-docker
 
-Docker images for various Racket versions available on DockerHub as [`racket/racket:<version>`](https://hub.docker.com/r/racket/racket/). For example, to run a Racket 8.18 REPL:
+Docker images for various Racket versions available on DockerHub as [`racket/racket:<version>`](https://hub.docker.com/r/racket/racket/). For example, to run a Racket 9.0 REPL:
 
 ```
-$ docker run -it racket/racket:8.18-full
+$ docker run -it racket/racket:9.0-full
 ```
 
 #### Normal images
@@ -16,7 +16,7 @@ These images use the `minimal-install` of Racket to avoid pulling in things like
 DrRacket or Scribble. This also means many `raco` commands such as `raco make`
 will be missing; install the `compiler-lib` package to get most of the standard
 `raco` commands. Alternatively, use the "full" images instead such as
-`racket/racket:8.18-full`.
+`racket/racket:9.0-full`.
 
 Versions: 6.1 and above. Racket CS images are available for 7.4 and above.
 
diff --git a/build.sh b/build.sh
index f5f2046..530a644 100755
--- a/build.sh
+++ b/build.sh
@@ -3,6 +3,7 @@
 set -euxfo pipefail;
 
 case "${1:-x}" in
+  9x) declare -r series="9x" ;;
   8x_2) declare -r series="8x_2" ;;
   8x_1) declare -r series="8x_1" ;;
   8x) declare -r series="8x" ;;
@@ -10,7 +11,7 @@ case "${1:-x}" in
   6x) declare -r series="6x" ;;
   snapshot) declare -r series="snapshot" ;;
 
-  *) echo "usage: $0 [6x|7x|8x|8x_1|8x_2|snapshot]"
+  *) echo "usage: $0 [6x|7x|8x|8x_1|8x_2|9x|snapshot]"
      exit 1
      ;;
 esac
@@ -58,6 +59,18 @@ build_snapshot () {
   build "racket" "${full_installer}" "${version}" "${version}-full";
 }
 
+build_9x () {
+  declare -r version="${1}";
+
+  declare -r installer_path="racket-minimal-${version}-x86_64-linux-natipkg.sh";
+  declare -r installer=$(installer_url "${version}" "${installer_path}") || exit "${?}";
+  build "racket" "${installer}" "${version}" "${version}";
+
+  declare -r full_installer_path="racket-${version}-x86_64-linux-natipkg.sh";
+  declare -r full_installer=$(installer_url "${version}" "${full_installer_path}") || exit "${?}";
+  build "racket" "${full_installer}" "${version}" "${version}-full";
+};
+
 build_8x () {
   declare -r version="${1}";
 
@@ -123,18 +136,22 @@ foreach () {
   done;
 };
 
-declare -r LATEST_RACKET_VERSION="8.18";
+declare -r LATEST_RACKET_VERSION="9.0";
 
 tag_latest () {
   declare -r repository="${1}";
   docker image tag "${repository}:${LATEST_RACKET_VERSION}" "${repository}:latest";
 };
 
+build_all_9x () {
+  foreach build_9x "9.0";
+  tag_latest "${DOCKER_REPOSITORY}";
+  tag_latest "${SECONDARY_DOCKER_REPOSITORY}";
+}
+
 # The 8x series is split into two to avoid running into storage limits in CI.
 build_8x_2 () {
   foreach build_8x "8.10" "8.11" "8.11.1" "8.12" "8.13" "8.14" "8.15" "8.16" "8.17" "8.18";
-  tag_latest "${DOCKER_REPOSITORY}";
-  tag_latest "${SECONDARY_DOCKER_REPOSITORY}";
 }
 
 build_8x_1 () {
@@ -158,6 +175,7 @@ build_all_6x () {
 build_base;
 
 case "$series" in
+  9x) build_all_9x ;;
   8x_2) build_8x_2 ;;
   8x_1) build_8x_1 ;;
   8x) build_all_8x ;;