diff --git a/build.gradle b/build.gradle
index af6ff22b8..d66b66d73 100644
--- a/build.gradle
+++ b/build.gradle
@@ -30,6 +30,7 @@ ext {
     openSamlVersion = "4.3.2"
     commonmarkVersion = "0.27.0"
     googleJavaFormatVersion = "1.28.0"
+    logback = "1.5.21"
     tempJrePath = null
 }
 
@@ -126,8 +127,8 @@ subprojects {
         implementation 'io.github.pixee:java-security-toolkit:1.2.2'
 
         //tmp for security bumps
-        implementation 'ch.qos.logback:logback-core:1.5.20'
-        implementation 'ch.qos.logback:logback-classic:1.5.20'
+        implementation "ch.qos.logback:logback-core:$logback"
+        implementation "ch.qos.logback:logback-classic:$logback"
         compileOnly "org.projectlombok:lombok:$lombokVersion"
         annotationProcessor "org.projectlombok:lombok:$lombokVersion"