diff --git a/signature-ext/build.gradle.kts b/signature-ext/build.gradle.kts
index a53cb0c..4a29464 100644
--- a/signature-ext/build.gradle.kts
+++ b/signature-ext/build.gradle.kts
@@ -22,7 +22,7 @@ dependencies {
     implementation(project(":packet"))
 
     // https://mvnrepository.com/artifact/org.bouncycastle/bcutil-jdk18on
-    implementation("org.bouncycastle:bcutil-jdk18on:1.78.1")
+    implementation("org.bouncycastle:bcutil-jdk18on:1.79")
 
     testImplementation("org.junit.jupiter:junit-jupiter-api:5.11.3")
     testRuntimeOnly("org.junit.jupiter:junit-jupiter-engine:5.11.2")