diff --git a/shell-integration/ssh/bootstrap.py b/shell-integration/ssh/bootstrap.py
index 4cc4afef2..9c73f2e54 100644
--- a/shell-integration/ssh/bootstrap.py
+++ b/shell-integration/ssh/bootstrap.py
@@ -20,7 +20,12 @@ echo_on = int('ECHO_ON')
 data_dir = shell_integration_dir = ''
 request_data = int('REQUEST_DATA')
 leading_data = b''
-login_shell = pwd.getpwuid(os.geteuid()).pw_shell or os.environ.get('SHELL') or 'sh'
+try:
+    login_shell = pwd.getpwuid(os.geteuid()).pw_shell or os.environ.get('SHELL') or '/bin/sh'
+except KeyError:
+    login_shell = os.environ.get('SHELL') or '/bin/sh'
+    with suppress(Exception):
+        print('Failed to read login shell via getpwuid() for current user, falling back to', login_shell, file=sys.stderr)
 export_home_cmd = b'EXPORT_HOME_CMD'
 if export_home_cmd:
     HOME = base64.standard_b64decode(export_home_cmd).decode('utf-8')