diff --git a/.phive/phars.xml b/.phive/phars.xml
index 52a1dae..24c7b5b 100644
--- a/.phive/phars.xml
+++ b/.phive/phars.xml
@@ -1,6 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <phive xmlns="https://phar.io/phive">
   <phar name="php-cs-fixer" version="^3.71" installed="3.92.3" location="./tools/php-cs-fixer" copy="true"/>
-  <phar name="composer" version="^2.8" installed="2.9.3" location="./tools/composer" copy="true"/>
   <phar name="infection" version="^0.29" installed="0.29.14" location="./tools/infection" copy="true"/>
 </phive>
diff --git a/build.xml b/build.xml
index 9c730f7..5a35cc5 100644
--- a/build.xml
+++ b/build.xml
@@ -27,6 +27,13 @@
             <arg value="update"/>
         </exec>
 
+        <exec executable="${basedir}/tools/composer" taskname="composer">
+            <arg value="self-update"/>
+            <arg value="--no-interaction"/>
+            <arg value="--no-progress"/>
+            <arg value="--no-ansi"/>
+        </exec>
+
         <exec executable="${basedir}/tools/composer" dir="${basedir}/tools/.phpstan" taskname="composer">
             <arg value="update"/>
             <arg value="--no-interaction"/>