diff --git a/zuul-core/build.gradle b/zuul-core/build.gradle
index 30e45a37b5..65108783b8 100644
--- a/zuul-core/build.gradle
+++ b/zuul-core/build.gradle
@@ -7,7 +7,7 @@ dependencies {
     // TODO(carl-mastrangelo): this can be implementation; remove Logger from public api points.
     api libraries.slf4j
     implementation 'org.bouncycastle:bcprov-jdk18on:1.78.1'
-    implementation 'org.bouncycastle:bcpkix-jdk18on:1.78.1'
+    implementation 'org.bouncycastle:bcpkix-jdk18on:1.81'
     implementation 'com.fasterxml.jackson.core:jackson-core:2.16.1'
     api 'com.fasterxml.jackson.core:jackson-databind:2.16.1'