diff --git a/duniterpy/key/ascii_armor.py b/duniterpy/key/ascii_armor.py
index 9ab3efe47b0224179926f04bc3c2be03674fbccd..84b8c68335d83dad70d8e61a7b013d6a830c6047 100644
--- a/duniterpy/key/ascii_armor.py
+++ b/duniterpy/key/ascii_armor.py
@@ -14,11 +14,11 @@
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 import base64
+import importlib.metadata
 import re
 from typing import Any, Dict, List, Optional
 
 import libnacl
-from libnacl.version import version as libnacl_version
 
 from .encryption_key import PublicKey
 from .signing_key import SigningKey
@@ -33,6 +33,7 @@ HEADER_PREFIX = "-----"
 DASH_ESCAPE_PREFIX = "\x2D\x20"
 
 # Version field value
+libnacl_version = importlib.metadata.version("libnacl")
 VERSION_FIELD_VALUE = f"Python Libnacl {libnacl_version}"
 
 # Parser cursor status