diff --git a/build.gradle b/build.gradle
index 1de3fc4..e9bc40e 100644
--- a/build.gradle
+++ b/build.gradle
@@ -15,7 +15,7 @@ repositories {
 
 ext {
   asciidoctorjVersion = '2.5.13'
-  asciidoctorjPdfVersion = '2.3.18'
+  asciidoctorjPdfVersion = '2.3.19'
 }
 
 dependencies {