diff --git a/2-php8.1/Dockerfile b/2-php8.1/Dockerfile
index 80e1be1..db69f2c 100644
--- a/2-php8.1/Dockerfile
+++ b/2-php8.1/Dockerfile
@@ -3,7 +3,7 @@ FROM php:8.1.30-cli-bullseye@sha256:c8013c2bb3354ccad76a59ccafb7606a091985a854ef
 SHELL [ "/bin/bash", "-exo", "pipefail", "-c" ]
 
 # renovate: datasource=github-tags depName=composer/composer versioning=semver
-ENV COMPOSER_VERSION 2.7.9
+ENV COMPOSER_VERSION 2.8.1
 ENV COMPOSER_INSTALLER_COMMIT 459bcaab2cc03f1656dd7b065d500d0cf3070e3f
 ENV COMPOSER_INSTALLER_HASH 756890a4488ce9024fc62c56153228907f1545c228516cbf63f885e036d37e9a59d27d63f46af1d4d07ee0f76181c7d3
 
diff --git a/2-php8.2/Dockerfile b/2-php8.2/Dockerfile
index c17c1ee..59f5232 100644
--- a/2-php8.2/Dockerfile
+++ b/2-php8.2/Dockerfile
@@ -3,7 +3,7 @@ FROM php:8.2.24-cli-bookworm@sha256:3f242df3d1d34e1cfb956304693d153244e34b3396f0
 SHELL [ "/bin/bash", "-exo", "pipefail", "-c" ]
 
 # renovate: datasource=github-tags depName=composer/composer versioning=semver
-ENV COMPOSER_VERSION 2.7.9
+ENV COMPOSER_VERSION 2.8.1
 ENV COMPOSER_INSTALLER_COMMIT 459bcaab2cc03f1656dd7b065d500d0cf3070e3f
 ENV COMPOSER_INSTALLER_HASH 756890a4488ce9024fc62c56153228907f1545c228516cbf63f885e036d37e9a59d27d63f46af1d4d07ee0f76181c7d3
 
diff --git a/2-php8.3/Dockerfile b/2-php8.3/Dockerfile
index 74e50de..f6aad1a 100644
--- a/2-php8.3/Dockerfile
+++ b/2-php8.3/Dockerfile
@@ -3,7 +3,7 @@ FROM php:8.3.12-cli-bookworm@sha256:304192ef927270f7ad41481848fedc6563366b3fcdc5
 SHELL [ "/bin/bash", "-exo", "pipefail", "-c" ]
 
 # renovate: datasource=github-tags depName=composer/composer versioning=semver
-ENV COMPOSER_VERSION 2.7.9
+ENV COMPOSER_VERSION 2.8.1
 ENV COMPOSER_INSTALLER_COMMIT 459bcaab2cc03f1656dd7b065d500d0cf3070e3f
 ENV COMPOSER_INSTALLER_HASH 756890a4488ce9024fc62c56153228907f1545c228516cbf63f885e036d37e9a59d27d63f46af1d4d07ee0f76181c7d3