diff --git a/.circleci/config.yml b/.circleci/config.yml
index d4a2400..26ca105 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -21,7 +21,7 @@ jobs:
   lint:
     working_directory: ~/pantheon-systems/wp-redis
     docker:
-      - image: quay.io/pantheon-public/build-tools-ci:6.x
+      - image: quay.io/pantheon-public/build-tools-ci:8.x-php7.4
     steps:
       - checkout
       - restore_cache:
@@ -40,7 +40,7 @@ jobs:
     working_directory: ~/pantheon-systems/wp-redis
     parallelism: 1
     docker:
-    - image: quay.io/pantheon-public/build-tools-ci:6.x
+    - image: quay.io/pantheon-public/build-tools-ci:8.x-php7.4
     steps:
     - checkout
     - restore_cache:
diff --git a/composer.lock b/composer.lock
index 4cbc0d8..e3a268b 100644
--- a/composer.lock
+++ b/composer.lock
@@ -4777,16 +4777,16 @@
         },
         {
             "name": "yoast/phpunit-polyfills",
-            "version": "1.0.3",
+            "version": "1.0.4",
             "source": {
                 "type": "git",
                 "url": "https://github.com/Yoast/PHPUnit-Polyfills.git",
-                "reference": "5ea3536428944955f969bc764bbe09738e151ada"
+                "reference": "3c621ff5429d2b1ff96dc5808ad6cde99d31ea4c"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/Yoast/PHPUnit-Polyfills/zipball/5ea3536428944955f969bc764bbe09738e151ada",
-                "reference": "5ea3536428944955f969bc764bbe09738e151ada",
+                "url": "https://api.github.com/repos/Yoast/PHPUnit-Polyfills/zipball/3c621ff5429d2b1ff96dc5808ad6cde99d31ea4c",
+                "reference": "3c621ff5429d2b1ff96dc5808ad6cde99d31ea4c",
                 "shasum": ""
             },
             "require": {
@@ -4794,7 +4794,7 @@
                 "phpunit/phpunit": "^4.8.36 || ^5.7.21 || ^6.0 || ^7.0 || ^8.0 || ^9.0"
             },
             "require-dev": {
-                "yoast/yoastcs": "^2.2.0"
+                "yoast/yoastcs": "^2.2.1"
             },
             "type": "library",
             "extra": {
@@ -4834,7 +4834,7 @@
                 "issues": "https://github.com/Yoast/PHPUnit-Polyfills/issues",
                 "source": "https://github.com/Yoast/PHPUnit-Polyfills"
             },
-            "time": "2021-11-23T01:37:03+00:00"
+            "time": "2022-11-16T09:07:52+00:00"
         }
     ],
     "aliases": [],
@@ -4846,5 +4846,5 @@
     "prefer-lowest": false,
     "platform": [],
     "platform-dev": [],
-    "plugin-api-version": "2.2.0"
+    "plugin-api-version": "2.3.0"
 }