diff --git a/lib/build.gradle b/lib/build.gradle
index e837bf4..aeb7101 100644
--- a/lib/build.gradle
+++ b/lib/build.gradle
@@ -14,7 +14,7 @@ repositories {
 }
 
 dependencies {
-    implementation 'org.bouncycastle:bcpkix-jdk18on:1.83'
+    implementation 'org.bouncycastle:bcpkix-jdk18on:1.84'
     testImplementation 'org.junit.jupiter:junit-jupiter:5.14.3'
     testRuntimeOnly 'org.junit.platform:junit-platform-launcher'
 }