diff --git a/build.gradle b/build.gradle
index 9107fd3..6197a0c 100644
--- a/build.gradle
+++ b/build.gradle
@@ -41,7 +41,7 @@ dependencies {
     implementation 'io.jsonwebtoken:jjwt:0.12.5'
     implementation 'com.google.code.gson:gson:2.10.1'
     implementation 'org.apache.commons:commons-lang3:3.14.0'
-    implementation 'org.bouncycastle:bcpkix-jdk18on:1.77'
+    implementation 'org.bouncycastle:bcpkix-jdk18on:1.78'
     implementation 'org.bouncycastle:bcprov-jdk18on:1.77'
 
     // Source dependencies. Check settings.gradle for the source repositories.