diff --git a/.gitattributes b/.gitattributes
new file mode 100644
index 0000000..d955a77
--- /dev/null
+++ b/.gitattributes
@@ -0,0 +1,7 @@
+# In GNU Radio 3.9+, pybind11 compares hash values of headers and source
+# files against knowns values.  Conversion of values to CRLF on checkout
+# break those checks so keep LF values when files are subject to said checks
+#
+*.h    text eol=lf
+*.c    text eol=lf
+*.cc   text eol=lf