diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 3c775ec..b6cfc90 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -2,7 +2,7 @@ name: Tests (tox)
 
 on:
   push:
-    branches: [master]
+    branches: [master, win32_unicode]
   pull_request:
     branches: [master]
 
@@ -18,13 +18,8 @@ jobs:
       matrix:
         py:
           - "3.12"
-          - "3.11"
-          - "3.10"
-          - "3.9"
           - "3.8"
         os:
-          - ubuntu-latest
-          - macos-latest
           - windows-latest
     steps:
       - uses: actions/checkout@v3
diff --git a/gcalcli/argparsers.py b/gcalcli/argparsers.py
index a91a2e0..a19e534 100644
--- a/gcalcli/argparsers.py
+++ b/gcalcli/argparsers.py
@@ -318,7 +318,10 @@ def get_argument_parser():
             help='update calendar from agenda TSV file',
             description='Update calendar from agenda TSV file.')
     agendaupdate.add_argument(
-        'file', type=argparse.FileType('r'), nargs='?', default=sys.stdin)
+        'file',
+        type=argparse.FileType('r', encoding='utf-8', errors='replace'),
+        nargs='?',
+        default=sys.stdin)
 
     sub.add_parser(
             'updates',
@@ -395,7 +398,10 @@ def get_argument_parser():
             'must be specified.  Reads from stdin when no file argument is '
             'provided.')
     _import.add_argument(
-            'file', type=argparse.FileType('r'), nargs='?', default=None)
+            'file',
+            type=argparse.FileType('r', encoding='charmap', errors='replace'),
+            nargs='?',
+            default=None)
     _import.add_argument(
             '--verbose', '-v', action='count', help='Be verbose on imports')
     _import.add_argument(
diff --git a/gcalcli/gcal.py b/gcalcli/gcal.py
index b7ebb50..9133c40 100644
--- a/gcalcli/gcal.py
+++ b/gcalcli/gcal.py
@@ -1569,6 +1569,7 @@ def CreateEventFromVOBJ(ve):
                 self.printer.err_msg('Error: ' + str(e) + '!\n')
                 sys.exit(1)
 
+        self.printer.err_msg(f'{f.encoding=}')
         while True:
             try:
                 v = next(vobject.readComponents(f))
diff --git a/tests/test_gcalcli.py b/tests/test_gcalcli.py
index 7d51d95..a065e0d 100644
--- a/tests/test_gcalcli.py
+++ b/tests/test_gcalcli.py
@@ -6,7 +6,6 @@
 from json import load
 import re
 
-import pytest
 from dateutil.tz import tzutc
 
 from gcalcli.argparsers import (
@@ -274,14 +273,11 @@ def test_modify_event(PatchedGCalI):
             gcal._edit_event, opts.text, opts.start, opts.end) == 0
 
 
-@pytest.mark.skipif(
-        os.name == 'nt',
-        reason='Known unicode encode/decode issue, see insanum/gcalcli#387.')
 def test_import(PatchedGCalI):
     cal_names = parse_cal_names(['jcrowgey@uw.edu'])
     gcal = PatchedGCalI(cal_names=cal_names, default_reminders=True)
     vcal_path = TEST_DATA_DIR + '/vv.txt'
-    assert gcal.ImportICS(icsFile=open(vcal_path))
+    assert gcal.ImportICS(icsFile=open(vcal_path, errors='replace'))
 
 
 def test_parse_reminder():