diff --git a/pyproject.toml b/pyproject.toml
index 9a9d9e69e..f2033c599 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -26,11 +26,14 @@ dependencies = [
     "ruamel.yaml ~= 0.17.40",
     "pydantic ~= 2.5.2",
     "jinja2 ~= 3.1.2",
-    "tiramisu ~= 4.1.0",
+    "tiramisu ~= 4.1.0"
 ]
-[project.optional-dependancies]
+
+[project.optional-dependencies]
 dev = [
     "pylint ~= 3.0.3",
+    "pytest ~= 8.2.2",
+    "lxml ~= 5.2.2"
 ]
 
 [tool.commitizen]
diff --git a/tests/data/dict1/dict.yml b/tests/data/dict1/dict.yml
new file mode 100644
index 000000000..d0783e716
--- /dev/null
+++ b/tests/data/dict1/dict.yml
@@ -0,0 +1,5 @@
+# dict with a correct version declared
+#version: "1.1"
+hello:
+  type: string
+  default: world
diff --git a/tests/data/dict2/dict.yml b/tests/data/dict2/dict.yml
new file mode 100644
index 000000000..c12d1ce7e
--- /dev/null
+++ b/tests/data/dict2/dict.yml
@@ -0,0 +1,5 @@
+# dict with a correct version declared
+version: "1.0"
+hello:
+  type: string
+  default: world
diff --git a/tests/test_version.py b/tests/test_version.py
new file mode 100644
index 000000000..c4453afd1
--- /dev/null
+++ b/tests/test_version.py
@@ -0,0 +1,82 @@
+from shutil import rmtree  # , copyfile, copytree
+from os import getcwd, makedirs
+from os.path import isfile, join, isdir
+from pytest import fixture, raises
+from os import listdir
+
+from rougail import Rougail, RougailConfig
+from rougail.error import DictConsistencyError
+
+from ruamel.yaml import YAML
+
+# dico_dirs = 'tests/data'
+# test_ok = set()
+# for test in listdir(dico_dirs):
+#    if isdir(join(dico_dirs, test)):
+#        test_ok.add(test)
+# excludes = set([])
+# test_ok -= excludes
+
+# ORI_DIR = getcwd()
+
+# test_ok = list(test_ok)
+# test_ok.sort()
+##print(test_ok)
+
+# @fixture(scope="module", params=test_ok)
+# def test_dir(request):
+#    return request.param
+
+"""
+the kinematics are as follows:
+- if no version attribute is defined in the yaml file, then the default version attribute of rougailconfig is taken
+- if a version attribute is defined in the yaml file, this is the one that is taken
+"""
+
+
+def test_validate_default_version():
+    "retrieves the default_dictionary_format_version if no version in the yaml file"
+
+    RougailConfig["dictionaries_dir"] = ["tests/data/dict1"]
+    RougailConfig["default_dictionary_format_version"] = "1.1"
+    rougail = Rougail()
+    config = rougail.get_config()
+
+    filename = "tests/data/dict1/dict.yml"
+    with open(filename, encoding="utf8") as file_fh:
+        objects = YAML(typ="safe").load(file_fh)
+    version = rougail.converted.validate_file_version(objects, filename)
+    assert version == RougailConfig["default_dictionary_format_version"]
+
+
+def test_validate_file_version_from_yml():
+    "retrives the yaml file version defined in the yaml file"
+
+    RougailConfig["dictionaries_dir"] = ["tests/data/dict2"]
+    RougailConfig["default_dictionary_format_version"] = "1.1"
+    rougail = Rougail()
+    config = rougail.get_config()
+
+    filename = "tests/data/dict2/dict.yml"
+    with open(filename, encoding="utf8") as file_fh:
+        objects = YAML(typ="safe").load(file_fh)
+    version = rougail.converted.validate_file_version(objects, filename)
+    assert version == "1.0"
+
+
+def test_retrieve_version_from_config():
+
+    RougailConfig["dictionaries_dir"] = ["tests/data/dict2"]
+    RougailConfig["default_dictionary_format_version"] = "1.1"
+    rougail = Rougail()
+    # FIXME replace with rougail.annotator()
+    # rougail.converted.annotator()
+    rougail.get_config()
+    assert rougail.converted.paths._data["rougail.hello"].version == "1.0"
+
+
+# def test_dictionary(test_dir):
+#    assert getcwd() == ORI_DIR
+#    test_dir = join(dico_dirs, test_dir)
+#    launch_test(test_dir, 'dict')
+#    assert getcwd() == ORI_DIR