diff --git a/build.gradle b/build.gradle
index b3c08d1..09375be 100644
--- a/build.gradle
+++ b/build.gradle
@@ -16,7 +16,7 @@ ext {
     fusionAuthVersion = '5.3.2'
     junitJupiterVersion = '5.10.0'
     jaxbVersion = '2.3.1'
-    bouncyCastleVersion = '1.77'
+    bouncyCastleVersion = '1.78.1'
     jose4jVersion = '0.9.6'
 }