diff --git a/.circleci/config.yml b/.circleci/config.yml
index 14d3bd8a..f4b730db 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -27,6 +27,10 @@ jobs:
           name: Configure PHP
           command: |
             echo "sendmail_path=/bin/true" | sudo tee -a "/etc/php.d/circleci.ini"
+      - run:
+          name: Update Composer
+          command: |
+            sudo composer self-update
       - run:
           name: Create artifacts directory
           command: mkdir /tmp/artifacts
diff --git a/README.md b/README.md
index 1672e826..e5564a42 100644
--- a/README.md
+++ b/README.md
@@ -10,6 +10,8 @@ _Note: If you are starting a new a project, you may be looking for the [drupal-s
 $> composer require palantirnet/the-build
 ```
 
+Composer 2.2.2 or greater is required for the-build.
+
 ## Setting up
 
 Install the default templates and phing targets to your project:
diff --git a/bin/the-build-installer b/bin/the-build-installer
index fc965f9d..928b3e22 100755
--- a/bin/the-build-installer
+++ b/bin/the-build-installer
@@ -1,20 +1,17 @@
 #!/bin/sh
 #
 # Wrapper for our install command; at least this way it's somewhat discoverable.
-# Previously:
+#
+# The install command boils down to:
 #   vendor/bin/phing -f vendor/palantirnet/the-build/targets/install.xml
+#
+# * This script requires Composer 2.2.2 or greater, because of a series of script proxying
+#   changes between 2.1.x and 2.2.2. This requirement is enforced in composer.json.
+# * This script assumes the composer bin dir is at vendor/bin/
 
-# Relative path to this script.
-SCRIPT=$(readlink "$0")
-
-# Absolute path to this script's parent directory.
-SCRIPTPATH=$(cd `dirname $0` && cd `dirname $SCRIPT` && pwd)
-
-REPOPATH=$(cd `dirname $SCRIPTPATH` && cd ../../../ && pwd)
-
-if [ "$REPOPATH" = `pwd` ]; then
-  # Run our install task.
-  $SCRIPTPATH/../../../bin/phing -f $SCRIPTPATH/../targets/install.xml
-else
-  echo "Please run this command from your project root."
+# Composer 2.2.2 through 2.2.6
+if [ "$COMPOSER_BIN_DIR" != "" ]; then
+  COMPOSER_RUNTIME_BIN_DIR="$COMPOSER_BIN_DIR"
 fi
+
+(cd $COMPOSER_RUNTIME_BIN_DIR/../../ && $COMPOSER_RUNTIME_BIN_DIR/phing -f $COMPOSER_RUNTIME_BIN_DIR/../palantirnet/the-build/targets/install.xml)
diff --git a/composer.json b/composer.json
index 8b0355a5..6e146a17 100644
--- a/composer.json
+++ b/composer.json
@@ -12,6 +12,7 @@
         "bin/the-build-installer"
     ],
     "require": {
+        "composer-runtime-api": "^2.2.2",
         "cweagans/composer-patches": "^1.7",
         "drupal/coder": "^8.3.6",
         "drush/drush": "^9 || ^10",
@@ -29,7 +30,11 @@
         }
     },
     "config": {
-        "sort-packages": true
+        "sort-packages": true,
+        "allow-plugins": {
+            "dealerdirect/phpcodesniffer-composer-installer": true,
+            "cweagans/composer-patches": true
+        }
     },
     "extra": {
         "patches": {
diff --git a/defaults/install/.circleci/config.yml b/defaults/install/.circleci/config.yml
index b1cda175..f1c50485 100644
--- a/defaults/install/.circleci/config.yml
+++ b/defaults/install/.circleci/config.yml
@@ -39,6 +39,10 @@ jobs:
           name: Configure PHP
           command: |
             echo "sendmail_path=/bin/true" | sudo tee -a "/etc/php.d/circleci.ini"
+      - run:
+          name: Update Composer
+          command: |
+            sudo composer self-update
       - run:
           name: Create artifacts directory
           command: mkdir /tmp/artifacts