diff --git a/Dockerfile_amd64 b/Dockerfile_amd64
index ef4aee0..a3a3883 100644
--- a/Dockerfile_amd64
+++ b/Dockerfile_amd64
@@ -37,10 +37,10 @@ ENV ServerIP 0.0.0.0
 ENV FTL_CMD no-daemon
 ENV DNSMASQ_USER root
 
-ENV VERSION v4.3.2
+ENV VERSION v4.3.3
 ENV PATH /opt/pihole:${PATH}
 
-LABEL image="pihole/pihole:v4.3.2_amd64"
+LABEL image="pihole/pihole:v4.3.3_amd64"
 LABEL maintainer="adam@diginc.us"
 LABEL url="https://www.github.com/pi-hole/docker-pi-hole"
 
diff --git a/Dockerfile_arm64 b/Dockerfile_arm64
index 54c9cb3..cede65c 100644
--- a/Dockerfile_arm64
+++ b/Dockerfile_arm64
@@ -37,10 +37,10 @@ ENV ServerIP 0.0.0.0
 ENV FTL_CMD no-daemon
 ENV DNSMASQ_USER root
 
-ENV VERSION v4.3.2
+ENV VERSION v4.3.3
 ENV PATH /opt/pihole:${PATH}
 
-LABEL image="pihole/pihole:v4.3.2_arm64"
+LABEL image="pihole/pihole:v4.3.3_arm64"
 LABEL maintainer="adam@diginc.us"
 LABEL url="https://www.github.com/pi-hole/docker-pi-hole"
 
diff --git a/Dockerfile_armel b/Dockerfile_armel
index 7b0c034..8c97983 100644
--- a/Dockerfile_armel
+++ b/Dockerfile_armel
@@ -37,10 +37,10 @@ ENV ServerIP 0.0.0.0
 ENV FTL_CMD no-daemon
 ENV DNSMASQ_USER root
 
-ENV VERSION v4.3.2
+ENV VERSION v4.3.3
 ENV PATH /opt/pihole:${PATH}
 
-LABEL image="pihole/pihole:v4.3.2_armel"
+LABEL image="pihole/pihole:v4.3.3_armel"
 LABEL maintainer="adam@diginc.us"
 LABEL url="https://www.github.com/pi-hole/docker-pi-hole"
 
diff --git a/VERSION b/VERSION
index db6ecdd..5d3e685 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-v4.3.2
+v4.3.3
diff --git a/test/conftest.py b/test/conftest.py
index bbe0a3c..546fde6 100644
--- a/test/conftest.py
+++ b/test/conftest.py
@@ -24,7 +24,7 @@ def args_volumes():
 
 @pytest.fixture()
 def args_env():
-    return '-e ServerIP="127.0.0.1" -e ServerIPv6="::1"'
+    return '-e ServerIP="127.0.0.1"'
 
 @pytest.fixture()
 def args(args_dns, args_volumes, args_env):
@@ -120,7 +120,7 @@ def persist_args_volumes():
 
 @pytest.fixture(scope='module')
 def persist_args_env():
-    return '-e ServerIP="127.0.0.1" -e ServerIPv6="::1"'
+    return '-e ServerIP="127.0.0.1"'
 
 @pytest.fixture(scope='module')
 def persist_args(persist_args_dns, persist_args_volumes, persist_args_env):
diff --git a/tox.ini b/tox.ini
index d1f48a7..7ab2c20 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,5 +1,5 @@
 [tox]
-envlist = py37
+envlist = py38
 
 [testenv]
 whitelist_externals = docker