diff --git a/Dockerfile b/Dockerfile
index 980de92..9a0a161 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-ARG PYTHON_VERSION=2
+ARG PYTHON_VERSION=3
 FROM python:${PYTHON_VERSION}-alpine
 
 COPY nginx-ldap-auth-daemon.py /usr/src/app/
@@ -9,9 +9,9 @@ WORKDIR /usr/src/app/
 RUN \
     apk --no-cache add openldap-dev && \
     apk --no-cache add --virtual build-dependencies build-base && \
-    pip install python-ldap && \
+    pip3 install python-ldap && \
     apk del build-dependencies
 
 EXPOSE 8888
 
-CMD ["python", "/usr/src/app/nginx-ldap-auth-daemon.py", "--host", "0.0.0.0", "--port", "8888"]
+CMD ["python3", "/usr/src/app/nginx-ldap-auth-daemon.py", "--host", "0.0.0.0", "--port", "8888"]
diff --git a/debian/control b/debian/control
index 3e46d83..522a819 100644
--- a/debian/control
+++ b/debian/control
@@ -3,11 +3,11 @@ Maintainer: Ippolitov Igor <iippolitov@nginx.com>
 Section: misc
 Priority: optional
 Standards-Version: 3.9.7
-Build-Depends: debhelper (>= 9), dh-systemd, python, dh-python, dh-exec
+Build-Depends: debhelper (>= 9), dh-systemd, python3, dh-python, dh-exec
 
 Package: nginx-ldap-auth
 Architecture: all
-Depends:  systemd, python(>=2.6), python-ldap, python-argparse
+Depends:  systemd, python3(>=3.7), python3-ldap
 Description: a reference implementation of an authentication helper for Nginx
  This is a reference implementation of an authentication helper for Nginx.
  It listens for incoming requests and uses parameters from headers
diff --git a/debian/rules b/debian/rules
index aba6b25..627bd97 100755
--- a/debian/rules
+++ b/debian/rules
@@ -1,3 +1,3 @@
 #!/usr/bin/make -f
 %:
-	dh $@ --with python2 --with systemd
+	dh $@ --with python3 --with systemd
diff --git a/nginx-ldap-auth-daemon.py b/nginx-ldap-auth-daemon.py
index 388364c..87ea340 100755
--- a/nginx-ldap-auth-daemon.py
+++ b/nginx-ldap-auth-daemon.py
@@ -1,6 +1,6 @@
 #!/bin/sh
 ''''[ -z $LOG ] && export LOG=/dev/stdout # '''
-''''which python  >/dev/null && exec python  -u "$0" "$@" >> $LOG 2>&1 # '''
+''''which python3  >/dev/null && exec python3  -u "$0" "$@" >> $LOG 2>&1 # '''
 
 # Copyright (C) 2014-2015 Nginx, Inc.
 
diff --git a/rpm/nginx-ldap-auth.spec b/rpm/nginx-ldap-auth.spec
index 569fb17..53650d0 100644
--- a/rpm/nginx-ldap-auth.spec
+++ b/rpm/nginx-ldap-auth.spec
@@ -12,8 +12,7 @@ Source0:	nginx-ldap-auth-release-%{version}.tar.gz
 
 BuildRequires:	systemd
 Requires:	systemd
-Requires:	python-ldap
-Requires:	python-argparse
+Requires:	python3-ldap
 Requires:	logrotate
 
 %description