diff --git a/app/build.gradle b/app/build.gradle
index 4ba9897..3c9fced 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -64,7 +64,7 @@ dependencies {
     implementation 'com.github.ctodobom:FabToolbar:3c5f0e0ff1b6d5089e20b7da7157a604075ae943'
     implementation 'org.matomo.sdk:tracker:4.1.2'
     implementation 'com.github.MikeOrtiz:TouchImageView:3.1.1'
-    implementation 'com.itextpdf:kernel:7.2.2'
-    implementation 'com.itextpdf:layout:7.2.2'
-    implementation 'com.itextpdf:io:7.2.1'
+    implementation "com.itextpdf:kernel:$itextpdf_version"
+    implementation "com.itextpdf:layout:$itextpdf_version"
+    implementation "com.itextpdf:io:$itextpdf_version"
 }