diff --git a/lib/build.gradle b/lib/build.gradle
index 1478c93..889584d 100644
--- a/lib/build.gradle
+++ b/lib/build.gradle
@@ -12,7 +12,7 @@ repositories {
 }
 
 dependencies {
-    implementation 'org.bouncycastle:bcpkix-jdk18on:1.77'
+    implementation 'org.bouncycastle:bcpkix-jdk18on:1.78'
     testImplementation 'org.junit.jupiter:junit-jupiter:5.10.2'
 }