diff --git a/CHANGELOG.md b/CHANGELOG.md
index 188e01a..144f9c3 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -18,6 +18,12 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ### Security
 
+## [2.12.0] - 2021-11-02
+
+### Changed
+
+* btrfs depends on the btrfd-progs package instead of btrfs-tools
+
 ## [2.11.1] - 2021-06-30
 
 ### Changed
diff --git a/Vagrantfile b/Vagrantfile
index e7764fe..9791669 100644
--- a/Vagrantfile
+++ b/Vagrantfile
@@ -24,7 +24,7 @@ mkdir -p /usr/lib/nagios/plugins/
 SCRIPT
 
   $deps = <<SCRIPT
-DEBIAN_FRONTEND=noninteractive apt-get -yq install openssh-server btrfs-tools rsync lsb-base coreutils sed dash mount openssh-sftp-server libc6 bash-completion duc-nox cryptsetup bats
+DEBIAN_FRONTEND=noninteractive apt-get -yq install openssh-server btrfs-progs rsync lsb-base coreutils sed dash mount openssh-sftp-server libc6 bash-completion duc-nox cryptsetup bats
 SCRIPT
 
   $pre_part = <<SCRIPT
@@ -47,7 +47,9 @@ SCRIPT
     { :version => "stretch", :fs => "btrfs" },
     { :version => "stretch", :fs => "ext4" },
     { :version => "buster", :fs => "btrfs" },
-    { :version => "buster", :fs => "ext4" }
+    { :version => "buster", :fs => "ext4" },
+    { :version => "bullseye", :fs => "btrfs" },
+    { :version => "bullseye", :fs => "ext4" }
   ]
 
   nodes.each do |i|
diff --git a/lib/bkctld-inc b/lib/bkctld-inc
index d29c752..049e5cf 100755
--- a/lib/bkctld-inc
+++ b/lib/bkctld-inc
@@ -14,12 +14,17 @@ create_inc_btrfs() {
     jail_path=$(jail_path "${jail_name}")
     inc_path=$(inc_path "${jail_name}" "${inc_name}")
 
+    btrfs_bin=$(command -v btrfs)
+    if [ -z "${btrfs_bin}" ]; then
+        error "btrfs not found. Please install brtfs-progs."
+    fi
+
     if dry_run; then
         echo "[dry-run] btrfs subvolume snapshot of ${jail_path} to ${inc_path}"
     else
         mkdir --parents "$(dirname "${inc_path}")"
         # create a btrfs readonly snapshot from the jail
-        /bin/btrfs subvolume snapshot -r "${jail_path}" "${inc_path}" | debug
+        ${btrfs_bin} subvolume snapshot -r "${jail_path}" "${inc_path}" | debug
     fi
 }
 create_inc_ext4() {
@@ -52,7 +57,7 @@ for jail_name in ${jails_list}; do
 
     # If no incs policy is found, we don't create incs
     if [ -n "${incs_policy_file}" ]; then
-        # If no incs directory is found, we don't create incs
+        # If inc directory is not present, we proceed with inc creation
         if [ ! -d "${inc_path}" ]; then
             info "Progress: jail ${jails_count} out of ${jails_total}"
             notice "Create inc \`${inc_name}' for jail \`${jail_name}' : start"
diff --git a/lib/bkctld-inc-lock b/lib/bkctld-inc-lock
index 6e69196..a71edf0 100755
--- a/lib/bkctld-inc-lock
+++ b/lib/bkctld-inc-lock
@@ -12,8 +12,12 @@ target_path="${2:?}"
 
 lock_target() {
     target="${1:?}"
+    btrfs_bin=$(command -v btrfs)
+    if [ -z ${btrfs_bin} ]; then
+        error "btrfs not found. Please install brtfs-progs."
+    fi
     if is_btrfs "${target}"; then
-        btrfs property set -ts "${target}" ro true
+        ${btrfs_bin} property set -ts "${target}" ro true
         info "Lock ${target}: done".
     else
         info "Lock ${target}: not BTRFS, nothing done".
@@ -21,8 +25,12 @@ lock_target() {
 }
 unlock_target() {
     target="${1:?}"
+    btrfs_bin=$(command -v btrfs)
+    if [ -z ${btrfs_bin} ]; then
+        error "btrfs not found. Please install brtfs-progs."
+    fi
     if is_btrfs "${target}"; then
-        btrfs property set -ts "${target}" ro false
+        ${btrfs_bin} property set -ts "${target}" ro false
         info "Unlock ${target}: done."
     else
         info "Unlock ${target}: not BTRFS, nothing done."
diff --git a/lib/bkctld-init b/lib/bkctld-init
index 6b52815..1e35f19 100755
--- a/lib/bkctld-init
+++ b/lib/bkctld-init
@@ -18,9 +18,13 @@ test -d "${jail_path}" && error "Skip jail \`${jail_name}' : it already exists"
 # Create config and jails directory
 mkdir --parents "${CONFDIR}" "${JAILDIR}"
 
+btrfs_bin=$(command -v btrfs)
+if [ -z ${btrfs_bin} ]; then
+    error "btrfs not found. Please install brtfs-progs."
+fi
 
 if is_btrfs "$(dirname "${JAILDIR}")" || is_btrfs "${JAILDIR}"; then
-    /bin/btrfs subvolume create "${jail_path}"
+    ${btrfs_bin} subvolume create "${jail_path}"
 else
     mkdir --parents "${jail_path}"
 fi
diff --git a/lib/bkctld-remove b/lib/bkctld-remove
index dab3b6c..731d414 100755
--- a/lib/bkctld-remove
+++ b/lib/bkctld-remove
@@ -52,9 +52,13 @@ fi
 rm -f "${CONFDIR}/${jail_name}"
 rm -rf "$(jail_config_dir "${jail_name}")"
 
-jail_inode=$(stat --format=%i "${jail_path}")
-if [ "${jail_inode}" -eq 256 ]; then
-    /bin/btrfs subvolume delete "${jail_path}" | debug
+btrfs_bin=$(command -v btrfs)
+if [ -z ${btrfs_bin} ]; then
+    error "btrfs not found. Please install brtfs-progs."
+fi
+
+if is_btrfs "${jail_path}"; then
+    ${btrfs_bin} subvolume delete "${jail_path}" | debug
 else
     rm -rf "${jail_path:?}" | debug
 fi
@@ -65,7 +69,7 @@ if [ -d "${incs_path}" ]; then
     for inc in ${incs}; do
         inc_inode=$(stat --format=%i "${incs_path}/${inc}")
         if [ "${inc_inode}" -eq 256 ]; then
-            /bin/btrfs subvolume delete "${incs_path}/${inc}" | debug
+            ${btrfs_bin} subvolume delete "${incs_path}/${inc}" | debug
         else
             warning "You need to purge \`${incs_path}/${inc}' manually"
         fi
diff --git a/lib/bkctld-rm b/lib/bkctld-rm
index 7b1df54..926877e 100755
--- a/lib/bkctld-rm
+++ b/lib/bkctld-rm
@@ -61,11 +61,16 @@ delete_inc_btrfs() {
     inc_name=$2
 
     inc_path=$(inc_path "${jail_name}" "${inc_name}")
+    btrfs_bin=$(command -v btrfs)
+
+    if [ -z ${btrfs_bin} ]; then
+        error "btrfs not found. Please install brtfs-progs."
+    fi
 
     if dry_run; then
         echo "[dry-run] delete btrfs subvolume ${inc_path}"
     else
-        /bin/btrfs subvolume delete "${inc_path}" | debug
+        ${btrfs_bin} subvolume delete "${inc_path}" | debug
     fi
 }
 delete_inc_ext4() {
diff --git a/zzz_evobackup b/zzz_evobackup
index 92b5720..ee47aa6 100755
--- a/zzz_evobackup
+++ b/zzz_evobackup
@@ -162,12 +162,12 @@ if [ "${LOCAL_TASKS}" = "1" ]; then
     # mysqldump --defaults-extra-file=/etc/mysql/debian.cnf -P 3306 \
     #  --opt --all-databases --force --events --hex-blob | gzip --best > ${LOCAL_BACKUP_DIR}/mysql.bak.gz
 
-    ## example with two dumps for each table (.sql/.txt) for all databases
-    # for i in $(echo SHOW DATABASES | mysql --defaults-extra-file=/etc/mysql/debian.cnf -P 3306 \
-    # | egrep -v "^(Database|information_schema|performance_schema|sys)" ); \
-    # do mkdir -p -m 700 /home/mysqldump/$i ; chown -RL mysql /home/mysqldump ; \
-    # mysqldump --defaults-extra-file=/etc/mysql/debian.cnf --force -P 3306 -Q --opt --events --hex-blob --skip-comments \
-    #  --fields-enclosed-by='\"' --fields-terminated-by=',' -T /home/mysqldump/$i $i; done
+    ## example with compressed SQL dump (with data) for each databases
+    # mkdir -p -m 700 ${LOCAL_BACKUP_DIR}/mysql/
+    # for i in $(mysql --defaults-extra-file=/etc/mysql/debian.cnf -P 3306 -e 'show databases' -s --skip-column-names \
+    # | egrep -v "^(Database|information_schema|performance_schema|sys)"); do
+    #     mysqldump --defaults-extra-file=/etc/mysql/debian.cnf --force -P 3306 --events --hex-blob $i | gzip --best > ${LOCAL_BACKUP_DIR}/mysql/${i}.sql.gz
+    # done
 
     ## Dump all grants (requires 'percona-toolkit' package)
     # mkdir -p -m 700 ${LOCAL_BACKUP_DIR}/mysql/
@@ -180,19 +180,19 @@ if [ "${LOCAL_TASKS}" = "1" ]; then
     #     mysqldump --defaults-extra-file=/etc/mysql/debian.cnf --force -P 3306 --no-data --databases $i > ${LOCAL_BACKUP_DIR}/mysql/${i}.schema.sql
     # done
 
-    ## example with compressed SQL dump (with data) for each databases
-    # mkdir -p -m 700 ${LOCAL_BACKUP_DIR}/mysql/
-    # for i in $(mysql --defaults-extra-file=/etc/mysql/debian.cnf -P 3306 -e 'show databases' -s --skip-column-names \
-    # | egrep -v "^(Database|information_schema|performance_schema|sys)"); do
-    #     mysqldump --defaults-extra-file=/etc/mysql/debian.cnf --force -P 3306 --events --hex-blob $i | gzip --best > ${LOCAL_BACKUP_DIR}/mysql/${i}.sql.gz
-    # done
-
     ## example with *one* uncompressed SQL dump for *one* database (MYBASE)
     # mkdir -p -m 700 ${LOCAL_BACKUP_DIR}/mysql/MYBASE
     # chown -RL mysql ${LOCAL_BACKUP_DIR}/mysql/
     # mysqldump --defaults-extra-file=/etc/mysql/debian.cnf --force -Q \
     # --opt --events --hex-blob --skip-comments -T ${LOCAL_BACKUP_DIR}/mysql/MYBASE MYBASE
 
+    ## example with two dumps for each table (.sql/.txt) for all databases
+    # for i in $(echo SHOW DATABASES | mysql --defaults-extra-file=/etc/mysql/debian.cnf -P 3306 \
+    # | egrep -v "^(Database|information_schema|performance_schema|sys)" ); \
+    # do mkdir -p -m 700 /home/mysqldump/$i ; chown -RL mysql /home/mysqldump ; \
+    # mysqldump --defaults-extra-file=/etc/mysql/debian.cnf --force -P 3306 -Q --opt --events --hex-blob --skip-comments \
+    #  --fields-enclosed-by='\"' --fields-terminated-by=',' -T /home/mysqldump/$i $i; done
+
     ## example with mysqlhotcopy
     # mkdir -p -m 700 ${LOCAL_BACKUP_DIR}/mysqlhotcopy/
     # mysqlhotcopy MYBASE ${LOCAL_BACKUP_DIR}/mysqlhotcopy/