diff --git a/contrib/automation/hgautomation/cli.py b/contrib/automation/hgautomation/cli.py
--- a/contrib/automation/hgautomation/cli.py
+++ b/contrib/automation/hgautomation/cli.py
@@ -65,7 +65,6 @@
 def build_inno(
     hga: HGAutomation,
     aws_region,
-    python_version,
     arch,
     revision,
     version,
@@ -80,21 +79,18 @@
 
         windows.synchronize_hg(SOURCE_ROOT, revision, instance)
 
-        for py_version in python_version:
-            for a in arch:
-                windows.build_inno_installer(
-                    instance.winrm_client,
-                    py_version,
-                    a,
-                    DIST_PATH,
-                    version=version,
-                )
+        for a in arch:
+            windows.build_inno_installer(
+                instance.winrm_client,
+                a,
+                DIST_PATH,
+                version=version,
+            )
 
 
 def build_wix(
     hga: HGAutomation,
     aws_region,
-    python_version,
     arch,
     revision,
     version,
@@ -109,15 +105,13 @@
 
         windows.synchronize_hg(SOURCE_ROOT, revision, instance)
 
-        for py_version in python_version:
-            for a in arch:
-                windows.build_wix_installer(
-                    instance.winrm_client,
-                    py_version,
-                    a,
-                    DIST_PATH,
-                    version=version,
-                )
+        for a in arch:
+            windows.build_wix_installer(
+                instance.winrm_client,
+                a,
+                DIST_PATH,
+                version=version,
+            )
 
 
 def build_windows_wheel(
@@ -168,15 +162,14 @@
                     dest_path=DIST_PATH,
                 )
 
-        for py_version in (2, 3):
-            for arch in ('x86', 'x64'):
-                windows.purge_hg(winrm_client)
-                windows.build_inno_installer(
-                    winrm_client, py_version, arch, DIST_PATH, version=version
-                )
-                windows.build_wix_installer(
-                    winrm_client, py_version, arch, DIST_PATH, version=version
-                )
+        for arch in ('x86', 'x64'):
+            windows.purge_hg(winrm_client)
+            windows.build_inno_installer(
+                winrm_client, arch, DIST_PATH, version=version
+            )
+            windows.build_wix_installer(
+                winrm_client, arch, DIST_PATH, version=version
+            )
 
 
 def terminate_ec2_instances(hga: HGAutomation, aws_region):
@@ -340,14 +333,6 @@
         help='Build Inno Setup installer(s)',
     )
     sp.add_argument(
-        '--python-version',
-        help='Which version of Python to target',
-        choices={3},
-        type=int,
-        nargs='*',
-        default=[3],
-    )
-    sp.add_argument(
         '--arch',
         help='Architecture to build for',
         choices={'x86', 'x64'},
@@ -402,14 +387,6 @@
 
     sp = subparsers.add_parser('build-wix', help='Build WiX installer(s)')
     sp.add_argument(
-        '--python-version',
-        help='Which version of Python to target',
-        choices={3},
-        type=int,
-        nargs='*',
-        default=[3],
-    )
-    sp.add_argument(
         '--arch',
         help='Architecture to build for',
         choices={'x86', 'x64'},
diff --git a/contrib/automation/hgautomation/windows.py b/contrib/automation/hgautomation/windows.py
--- a/contrib/automation/hgautomation/windows.py
+++ b/contrib/automation/hgautomation/windows.py
@@ -264,7 +264,6 @@
 
 def build_inno_installer(
     winrm_client,
-    python_version: int,
     arch: str,
     dest_path: pathlib.Path,
     version=None,
@@ -274,10 +273,7 @@
     Using a WinRM client, remote commands are executed to build
     a Mercurial Inno Setup installer.
     """
-    print(
-        'building Inno Setup installer for Python %d %s'
-        % (python_version, arch)
-    )
+    print('building Inno Setup installer for %s' % arch)
 
     # TODO fix this limitation in packaging code
     if not version:
@@ -319,7 +315,6 @@
 
 def build_wix_installer(
     winrm_client,
-    python_version: int,
     arch: str,
     dest_path: pathlib.Path,
     version=None,
@@ -328,7 +323,7 @@
 
     Using a WinRM client, remote commands are executed to build a WiX installer.
     """
-    print('Building WiX installer for Python %d %s' % (python_version, arch))
+    print('Building WiX installer for %s' % arch)
 
     # TODO fix this limitation in packaging code
     if not version: