diff --git a/crossref/__init__.py b/crossref/__init__.py
index 3585554..e0a98b6 100644
--- a/crossref/__init__.py
+++ b/crossref/__init__.py
@@ -1 +1,3 @@
-VERSION = "1.5.2"
+from importlib import metadata
+
+VERSION = metadata.version("crossrefapi")
diff --git a/pyproject.toml b/pyproject.toml
index 74f0eb7..f11a512 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -4,6 +4,9 @@ version = "1.6.0"
 description = "Library that implements the endpoints of the Crossref API"
 authors = ["Fabio Batalha <fabio.batalha@erudit.org>"]
 readme = "README.rst"
+packages = [
+  { include = "crossref",  from="."}
+]
 
 [tool.poetry.dependencies]
 python = "^3.8"