diff --git a/.circleci/config.yml b/.circleci/config.yml
index b97fc0a3..a31aedc0 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -22,7 +22,9 @@ jobs:
     steps:
       - run:
           name: Install packages
-          command: sudo apt-get install -y libpng-dev default-mysql-client
+          command: |
+            sudo apt-get update
+            sudo apt-get install -y libpng-dev default-mysql-client
       - run:
           name: Install nvm
           command: |
diff --git a/defaults/install/.circleci/config.yml b/defaults/install/.circleci/config.yml
index a7f714ae..07a95d76 100644
--- a/defaults/install/.circleci/config.yml
+++ b/defaults/install/.circleci/config.yml
@@ -19,7 +19,9 @@ jobs:
     steps:
       - run:
           name: Install packages
-          command: sudo apt-get install -y libpng-dev default-mysql-client
+          command: |
+            sudo apt-get update
+            sudo apt-get install -y libpng-dev default-mysql-client
       - run:
           name: Install nvm
           command: |
diff --git a/targets/artifact.xml b/targets/artifact.xml
index 6da0f6ef..7a590b35 100644
--- a/targets/artifact.xml
+++ b/targets/artifact.xml
@@ -232,7 +232,7 @@
     <target name="artifact-build" hidden="true">
         <echo>Installing composer dependencies in the artifact...</echo>
         <composer command="install" composer="${composer.composer}">
-            <arg line="--no-interaction --no-dev --working-dir=${artifact.directory}" />
+            <arg line="--no-interaction --no-dev --ignore-platform-reqs --working-dir=${artifact.directory}" />
         </composer>
 
         <echo>Deleting .git subdirectories added by Composer...</echo>