diff --git a/ties/__init__.py b/ties/__init__.py
index 6c10c0a..26c6c1c 100644
--- a/ties/__init__.py
+++ b/ties/__init__.py
@@ -8,6 +8,6 @@
 from .ligandmap import LigandMap
 from .protein import Protein
 
-__version__ = open(Path(__file__).parent / 'version.txt').read().strip()
+from ._version import __version__
 
 __all__ = [Ligand, Protein, Pair, Config, LigandMap, Protein, __version__]
\ No newline at end of file
diff --git a/ties/version.txt b/ties/version.txt
deleted file mode 100644
index 100819e..0000000
--- a/ties/version.txt
+++ /dev/null
@@ -1 +0,0 @@
-25.0.1
\ No newline at end of file