diff --git a/src/ansible_compat/prerun.py b/src/ansible_compat/prerun.py
index 5d32fec0..2788f2d6 100644
--- a/src/ansible_compat/prerun.py
+++ b/src/ansible_compat/prerun.py
@@ -9,7 +9,7 @@ def get_cache_dir(project_dir: str) -> str:
     # we would use the same key regardless the location of the user home
     # directory or where the project is clones (as long the project folder uses
     # the same name).
-    basename = os.path.basename(project_dir).encode(encoding="utf-8")
+    basename = os.path.basename(os.path.abspath(project_dir)).encode(encoding="utf-8")
     # 6 chars of entropy should be enough
     cache_key = hashlib.sha256(basename).hexdigest()[:6]
     cache_dir = (
diff --git a/test/test_prerun.py b/test/test_prerun.py
new file mode 100644
index 00000000..fa3651bf
--- /dev/null
+++ b/test/test_prerun.py
@@ -0,0 +1,11 @@
+"""Tests for ansible_compat.prerun module."""
+import os
+
+from ansible_compat.prerun import get_cache_dir
+
+
+def test_get_cache_dir_relative() -> None:
+    """Test behaviors of get_cache_dir."""
+    relative_path = "."
+    abs_path = os.path.abspath(relative_path)
+    assert get_cache_dir(relative_path) == get_cache_dir(abs_path)
diff --git a/tox.ini b/tox.ini
index ad117182..ec386f25 100644
--- a/tox.ini
+++ b/tox.ini
@@ -52,9 +52,10 @@ setenv =
   PIP_DISABLE_PIP_VERSION_CHECK = 1
   PIP_CONSTRAINT = {toxinidir}/constraints.txt
   PRE_COMMIT_COLOR = always
-  PYTEST_REQPASS = 73
+  PYTEST_REQPASS = 74
   FORCE_COLOR = 1
 allowlist_externals =
+  ansible
   sh
 
 [testenv:lint]