diff --git a/.github/workflows/build-and-deploy.yml b/.github/workflows/build-and-deploy.yml
index 492de49..f45a339 100644
--- a/.github/workflows/build-and-deploy.yml
+++ b/.github/workflows/build-and-deploy.yml
@@ -15,7 +15,7 @@ jobs:
       matrix:
         os_dist: [
             "ubuntu/trusty", "ubuntu/xenial", "ubuntu/bionic", "ubuntu/focal",
-            "debian/stretch", "debian/buster",
+            "debian/stretch", "debian/buster", "debian/bullseye",
             "el/7"
         ]
         php: [7.3, 7.4]
diff --git a/builder/config.mk b/builder/config.mk
index 90ec5dd..89e1d1f 100644
--- a/builder/config.mk
+++ b/builder/config.mk
@@ -36,7 +36,7 @@ NIGHTLY_BUILD_VERSION?=1
 # List of supported OS
 FEDORA:=fedora-rawhide fedora24 fedora23
 CENTOS:=centos7 centos6
-DEBIAN:=debian-sid debian-buster debian-stretch debian-wheezy
+DEBIAN:=debian-sid debian-buster debian-stretch debian-wheezy debian-bullseye
 UBUNTU:=ubuntu-bionic ubuntu-xenial ubuntu-trusty ubuntu-focal ubuntu-groovy
 
 DEBS:=$(DEBIAN) $(UBUNTU)