diff --git a/.github/workflows/run-test-suite.yml b/.github/workflows/run-test-suite.yml
index 0eda23db..97450182 100644
--- a/.github/workflows/run-test-suite.yml
+++ b/.github/workflows/run-test-suite.yml
@@ -77,6 +77,9 @@ jobs:
       - name: Validate composer.json and composer.lock
         run: composer validate --strict
 
+      - name: Download CPX
+        run: composer global require cpx/cpx
+
       - name: Get Composer Cache Directory
         id: composer-cache
         run: |
@@ -94,7 +97,7 @@ jobs:
         if: matrix.dependencies == 'lowest' && matrix.php != '8.4'
         run: composer update --no-interaction --no-progress --prefer-lowest
 
-      - name: Install lowest dependencies from composer.json
+      - name: Install lowest dependencies from composer.json ignoring ext-php constraint
         if: matrix.dependencies == 'lowest' && matrix.php == '8.4'
         run: composer update --no-interaction --no-progress --prefer-lowest --ignore-platform-req php
 
@@ -110,13 +113,13 @@ jobs:
         if: matrix.dependencies == 'highest' && matrix.php != '8.4'
         run: composer update --no-interaction --no-progress
 
-      - name: Install highest dependencies from composer.json
+      - name: Install highest dependencies from composer.json ignoring ext-php constraint
         if: matrix.dependencies == 'highest' && matrix.php == '8.4'
         run: composer update --no-interaction --no-progress --ignore-platform-req php
 
       - name: Download binaries
         if: inputs.download-binaries == true
-        run: composer get:binaries
+        run: cpx internal/dload get --no-interaction
 
       - name: Run tests
         run: ${{ inputs.test-command }}