diff --git a/src/extract_otp_secrets.py b/src/extract_otp_secrets.py
index de466f9..b96e96d 100644
--- a/src/extract_otp_secrets.py
+++ b/src/extract_otp_secrets.py
@@ -343,7 +343,11 @@ def get_otp_urls_from_file(filename: str, args: Args) -> OtpUrls:
 
 def read_lines_from_text_file(filename: str) -> list[str]:
     if verbose: print(f"Reading lines of {filename}")
-    finput = fileinput.input(filename, encoding='utf-8')
+    # PYTHON >= 3.10 support encoding
+    if sys.version_info >= (3, 10):
+        finput = fileinput.input(filename, encoding='utf-8')
+    else:
+        finput = fileinput.input(filename)
     try:
         lines = []
         for line in (line.strip() for line in finput):
diff --git a/tests/extract_otp_secrets_test.py b/tests/extract_otp_secrets_test.py
index c65ecfc..dc3a819 100644
--- a/tests/extract_otp_secrets_test.py
+++ b/tests/extract_otp_secrets_test.py
@@ -38,7 +38,7 @@ qreader_available: bool = extract_otp_secrets.qreader_available
 
 
 # Quickfix comment
-# @pytest.mark.skipif(sys.platform.startswith("win") or not qreader_available or sys.implementation.name == 'pypy', reason="Quickfix")
+# @pytest.mark.skipif(sys.platform.startswith("win") or not qreader_available or sys.implementation.name == 'pypy' or sys.version_info >= (3, 10), reason="Quickfix")
 
 
 def test_extract_stdout(capsys: pytest.CaptureFixture[str]) -> None:
@@ -356,6 +356,7 @@ def test_normalize_bytes() -> None:
 
 
 # Generate verbose output: python3.11 src/extract_otp_secrets.py example_export.txt -v -n > tests/data/print_verbose_output.txt
+@pytest.mark.skipif(sys.version_info < (3, 10), reason="fileinput.input encoding exists since PYTHON 3.10")
 def test_extract_verbose(capsys: pytest.CaptureFixture[str], relaxed: bool) -> None:
     # Act
     extract_otp_secrets.main(['-n', '-v', 'example_export.txt'])