diff --git a/README.asc b/README.adoc
similarity index 100%
rename from README.asc
rename to README.adoc
diff --git a/ci/before_deploy.ps1 b/ci/before_deploy.ps1
index 6800491..375bc05 100644
--- a/ci/before_deploy.ps1
+++ b/ci/before_deploy.ps1
@@ -14,7 +14,7 @@ $ZIP = "$SRC_DIR\$($Env:CRATE_NAME)-$($Env:APPVEYOR_REPO_TAG_NAME)-$($Env:TARGET
 Copy-Item "$SRC_DIR\target\$($Env:TARGET)\release\just.exe" '.\'
 Copy-Item "$SRC_DIR\GRAMMAR.md" '.\'
 Copy-Item "$SRC_DIR\LICENSE" '.\'
-Copy-Item "$SRC_DIR\README.asc" '.\'
+Copy-Item "$SRC_DIR\README.adoc" '.\'
 
 7z a "$ZIP" *
 
diff --git a/ci/before_deploy.sh b/ci/before_deploy.sh
index 3d1e7af..9ada8d2 100644
--- a/ci/before_deploy.sh
+++ b/ci/before_deploy.sh
@@ -24,7 +24,7 @@ main() {
     cp target/$TARGET/release/just $stage/
     cp GRAMMAR.md $stage/
     cp LICENSE $stage/
-    cp README.asc $stage/
+    cp README.adoc $stage/
 
     cd $stage
     tar czf $src/$CRATE_NAME-$TRAVIS_TAG-$TARGET.tar.gz *
diff --git a/justfile b/justfile
index 7cf99ea..804ad22 100644
--- a/justfile
+++ b/justfile
@@ -118,12 +118,12 @@ quine-text = '
 render-readme:
 	#!/usr/bin/env ruby
 	require 'github/markup'
-	$rendered = GitHub::Markup.render("README.asc", File.read("README.asc"))
+	$rendered = GitHub::Markup.render("README.adoc", File.read("README.adoc"))
 	File.write('tmp/README.html', $rendered)
 
 watch-readme:
 	just render-readme
-	fswatch -ro README.asc | xargs -n1 -I{} just render-readme
+	fswatch -ro README.adoc | xargs -n1 -I{} just render-readme
 
 # run all polyglot recipes
 polyglot: python js perl sh ruby
diff --git a/src/parser.rs b/src/parser.rs
index 560ac52..8c49034 100644
--- a/src/parser.rs
+++ b/src/parser.rs
@@ -854,7 +854,7 @@ a:
     let mut justfiles = vec![];
     let mut current = None;
 
-    for line in brev::slurp("README.asc").lines() {
+    for line in brev::slurp("README.adoc").lines() {
       if let Some(mut justfile) = current {
         if line == "```" {
           justfiles.push(justfile);