diff --git a/.github/workflows/build_and_test.yml b/.github/workflows/build_and_test.yml
index b4027ea..e5a881d 100644
--- a/.github/workflows/build_and_test.yml
+++ b/.github/workflows/build_and_test.yml
@@ -18,7 +18,7 @@ jobs:
         strategy:
             matrix:
                 os: [ubuntu-latest]
-                python-version: [3.9, '3.10', '3.11', '3.12']
+                python-version: [3.7, 3.8, 3.9, '3.10', '3.11', '3.12']
         steps:
             -   uses: actions/checkout@v4
 
diff --git a/bankid/certutils.py b/bankid/certutils.py
index d5a6cb6..b4b8933 100644
--- a/bankid/certutils.py
+++ b/bankid/certutils.py
@@ -6,11 +6,15 @@
 """
 
 import os
+import sys
 import subprocess
 from typing import Tuple, Union
 
 import pathlib
-import importlib.resources
+if sys.version_info < (3, 9):
+    import importlib_resources as impres
+else:
+    import importlib.resources as impres
 
 from bankid.certs import get_test_cert_p12
 from bankid.exceptions import BankIDError
@@ -19,7 +23,7 @@
 
 
 def resolve_cert_path(file: str) -> pathlib.Path:
-    path = importlib.resources.files("bankid.certs").joinpath(file)
+    path = impres.files("bankid.certs").joinpath(file)
     assert isinstance(path, pathlib.Path)
     return path
 
diff --git a/requirements.txt b/requirements.txt
index f7621d1..58f2627 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1 +1,2 @@
 httpx
+importlib_resources; python_version < "3.9"
\ No newline at end of file