diff --git a/build.gradle b/build.gradle
index 3f87bcefdb7b88467b7b0c413aab130cefb5ddb5..6bb37a101524e585617794a3886ef26a14737319 100644
--- a/build.gradle
+++ b/build.gradle
@@ -42,10 +42,6 @@ dependencies {
     asciidoctorGems 'rubygems:asciidoctor-bibtex:0.8.0'
 }
 
-asciidoctorj {
-    version = '2.5.2'
-}
-
 task bibtex() {
     def inputDir = file("src/docs/bibtex")
     def combinedFile = file("src/docs/asciidoc/combined.bib")