diff --git a/README.md b/README.md
index 1260aae..5c922a9 100644
--- a/README.md
+++ b/README.md
@@ -101,13 +101,13 @@ Then test your packages :
 Install the package `qemu-user-static` and `binfmt-support`, then list of all available images :
 
 ```
-lxc image list images:debian/buster
+lxc image list images:debian/bullseye
 ```
 
 Export the image of the architecture you want to run (for example armhf):
 
 ```
-lxc image export images:debian/buster/armhf
+lxc image export images:debian/bullseye/armhf
 ```
 
 This command will create two files.
diff --git a/lib/common.sh b/lib/common.sh
index 9663a64..5663f21 100644
--- a/lib/common.sh
+++ b/lib/common.sh
@@ -9,7 +9,7 @@ TEST_USER="package_checker"
 [[ -e "./config" ]] && source "./config"
 
 ARCH=${ARCH:-amd64}
-DIST=${DIST:-buster}
+DIST=${DIST:-bullseye}
 
 # Yunohost version: stable, testing or unstable
 YNH_BRANCH=${YNH_BRANCH:-stable}
@@ -20,8 +20,7 @@ LXC_NAME="ynh-appci-$DIST-$ARCH-$YNH_BRANCH-test-${WORKER_ID}"
 
 readonly lock_file="./pcheck-${WORKER_ID}.lock"
 
-DEFAULT_PHP_VERSION="7.3"
-[[ "$DIST" == "bullseye" ]] && DEFAULT_PHP_VERSION="7.4"
+DEFAULT_PHP_VERSION="7.4"
 
 #=================================================
 # LXC helpers