diff --git a/.editorconfig b/.editorconfig
index cad12bb1..c244f226 100644
--- a/.editorconfig
+++ b/.editorconfig
@@ -1,4 +1,4 @@
-[*.fs]
+[*.{fs,fsx}]
 end_of_line=lf
 indent_size=4
 max_line_length=80
diff --git a/.git-blame-ignore-revs b/.git-blame-ignore-revs
index bef56405..2e6956ee 100644
--- a/.git-blame-ignore-revs
+++ b/.git-blame-ignore-revs
@@ -11,6 +11,9 @@
 
 ##### fantomless/fantomas related: ###############
 
+# fantomless: upgrade to latest version (4.7.997-prerelease)
+eb00475d24b9e198dabe4a1b20849d3234dfaaa4
+
 # fantomless: update to v4.5.7.2
 3a02a4029e6e2bc8126961b65506a1be2d5b882a