diff --git a/ros_buildfarm/jenkins.py b/ros_buildfarm/jenkins.py
index edf0451a3..01b3f1b73 100644
--- a/ros_buildfarm/jenkins.py
+++ b/ros_buildfarm/jenkins.py
@@ -274,9 +274,8 @@ def _diff_configs(remote_config, new_config, context_lines):
     if ElementTree.tostring(remote_root) == ElementTree.tostring(new_root):
         return []
 
-    encoding_type = 'utf-8' if sys.version_info[0] < 3 else 'unicode'
-    xml1 = ElementTree.tostring(remote_root, encoding=encoding_type)
-    xml2 = ElementTree.tostring(new_root, encoding=encoding_type)
+    xml1 = ElementTree.tostring(remote_root, encoding='unicode')
+    xml2 = ElementTree.tostring(new_root, encoding='unicode')
     lines1 = xml1.splitlines()
     lines2 = xml2.splitlines()
 
diff --git a/ros_buildfarm/status_page.py b/ros_buildfarm/status_page.py
index 702be7fa7..6bd20a585 100644
--- a/ros_buildfarm/status_page.py
+++ b/ros_buildfarm/status_page.py
@@ -582,16 +582,15 @@ def _version_is_gt_other(version, other_version):
 def _get_comparable_loose_versions(version_str1, version_str2):
     loose_version1 = LooseVersion(version_str1)
     loose_version2 = LooseVersion(version_str2)
-    if sys.version_info[0] > 2:
-        # might raise TypeError in Python 3: http://bugs.python.org/issue14894
-        version_parts1 = loose_version1.version
-        version_parts2 = loose_version2.version
-        for i in range(min(len(version_parts1), len(version_parts2))):
-            try:
-                version_parts1[i] < version_parts2[i]
-            except TypeError:
-                version_parts1[i] = str(version_parts1[i])
-                version_parts2[i] = str(version_parts2[i])
+    # might raise TypeError in Python 3: http://bugs.python.org/issue14894
+    version_parts1 = loose_version1.version
+    version_parts2 = loose_version2.version
+    for i in range(min(len(version_parts1), len(version_parts2))):
+        try:
+            version_parts1[i] < version_parts2[i]
+        except TypeError:
+            version_parts1[i] = str(version_parts1[i])
+            version_parts2[i] = str(version_parts2[i])
     return loose_version1, loose_version2
 
 
diff --git a/setup.py b/setup.py
index d40b5ca61..cb7ad7c79 100644
--- a/setup.py
+++ b/setup.py
@@ -25,6 +25,7 @@
     # - ros_buildfarm/__init__.py
     # - stdeb.cfg
     'version': '3.0.1-master',
+    'python_requires': '>=3.6',
     'packages': find_packages(exclude=['test']),
     'package_data': {
         'ros_buildfarm.templates': [
@@ -72,9 +73,6 @@
     'license': 'Apache 2.0',
 }
 
-if os.sys.version_info[0] == 2:
-    kwargs['install_requires'].append('configparser')
-
 if 'SKIP_PYTHON_MODULES' in os.environ:
     kwargs['packages'] = []
 elif 'SKIP_PYTHON_SCRIPTS' in os.environ:
diff --git a/stdeb.cfg b/stdeb.cfg
index 1ef8438bc..5e604b617 100644
--- a/stdeb.cfg
+++ b/stdeb.cfg
@@ -3,26 +3,18 @@ Debian-Version: 100
 ; ros-buildfarm-modules same version (without the branch suffix) as in:
 ; - ros_buildfarm/__init__.py
 ; - setup.py
-Depends: python-argparse, python-catkin-pkg-modules, python-ros-buildfarm-modules (>= 3.0.0), python-rosdistro-modules (>= 1.0.0), python-yaml
-; ros-buildfarm-modules same version (without the branch suffix) as in:
-; - ros_buildfarm/__init__.py
-; - setup.py
 Depends3: python3-catkin-pkg-modules, python3-ros-buildfarm-modules (>= 3.0.0), python3-rosdistro-modules (>= 1.0.0), python3-yaml
-Conflicts: python3-ros-buildfarm
 Conflicts3: python-ros-buildfarm
-Suite: xenial yakkety zesty artful bionic cosmic disco eoan stretch buster
 Suite3: xenial yakkety zesty artful bionic cosmic disco eoan focal stretch buster
-Python2-Depends-Name: python
+No-Python2:
+X-Python3-Version: >= 3.6
 Setup-Env-Vars: SKIP_PYTHON_MODULES=1
 
 [ros_buildfarm_modules]
-Depends: python-catkin-pkg-modules, python-configparser, python-empy, python-rosdistro-modules (>= 1.0.0), python-yaml, python3-empy, python3-vcstool (>= 0.1.37)
 Depends3: python3-catkin-pkg-modules, python3-empy, python3-rosdistro-modules (>= 1.0.0), python3-vcstool (>= 0.1.37), python3-yaml
-Conflicts: python-ros-buildfarm (<< 1.3.0)
 Conflicts3: python3-ros-buildfarm (<< 1.3.0)
-Replaces: python-ros-buildfarm (<< 1.3.0)
 Replaces3: python3-ros-buildfarm (<< 1.3.0)
-Suite: xenial yakkety zesty artful bionic cosmic disco eoan stretch buster
 Suite3: xenial yakkety zesty artful bionic cosmic disco eoan focal stretch buster
-Python2-Depends-Name: python
+No-Python2:
+X-Python3-Version: >= 3.6
 Setup-Env-Vars: SKIP_PYTHON_SCRIPTS=1