diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index cb541c9..dab9adb 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -54,10 +54,8 @@ jobs:
   test:
     strategy:
       matrix:
-        os: [ ubuntu-latest ]
-        python: [ " 3.9" ]
-        #os: [ ubuntu-latest, macOS-latest, windows-latest ]
-        #python: [" 3.9", "3.10", "3.11", "3.12", "3.13" ]
+        os: [ ubuntu-latest, macOS-latest, windows-latest ]
+        python: [" 3.9", "3.10", "3.11", "3.12", "3.13" ]
     runs-on: ${{ matrix.os }}
     timeout-minutes: 20
     steps:
diff --git a/kreuzberg/_string.py b/kreuzberg/_string.py
index c1c2a69..1baede4 100644
--- a/kreuzberg/_string.py
+++ b/kreuzberg/_string.py
@@ -22,7 +22,7 @@ def safe_decode(byte_data: bytes, encoding: str | None = None) -> str:
     encodings = [encoding, detect(byte_data).get("encoding", ""), "utf-8"]
 
     for enc in [e for e in encodings if e]:  # pragma: no cover
-        with suppress(UnicodeDecodeError):
+        with suppress(UnicodeDecodeError, LookupError):
             return byte_data.decode(enc)
 
     # If all encodings fail, fall back to latin-1 which can handle any byte
diff --git a/tests/conftest.py b/tests/conftest.py
index df4ba19..d3acc1b 100644
--- a/tests/conftest.py
+++ b/tests/conftest.py
@@ -5,12 +5,6 @@
 import pytest
 
 
-@pytest.fixture
-def anyio_backend() -> str:
-    """override anyio to test only against asyncio"""
-    return "asyncio"
-
-
 @pytest.fixture(scope="session")
 def searchable_pdf() -> Path:
     return Path(__file__).parent / "source" / "searchable.pdf"