diff --git a/.gitignore b/.gitignore
index 3144cf5..76e93cc 100644
--- a/.gitignore
+++ b/.gitignore
@@ -129,4 +129,6 @@ dmypy.json
 .pyre/
 
 # IDEs
-.vscode
\ No newline at end of file
+.vscode
+
+.DS_Store
diff --git a/bpx/__init__.py b/bpx/__init__.py
index fb33772..3cf311e 100644
--- a/bpx/__init__.py
+++ b/bpx/__init__.py
@@ -1,7 +1,7 @@
 """BPX schema and parsers"""
 # flake8: noqa F401
 
-__version__ = "0.4.0"
+__version__ = "0.4.1"
 
 
 from .interpolated_table import InterpolatedTable
diff --git a/bpx_standard.pdf b/bpx_standard.pdf
new file mode 100644
index 0000000..f22c881
Binary files /dev/null and b/bpx_standard.pdf differ