diff --git a/x-pack/plugin/security/build.gradle b/x-pack/plugin/security/build.gradle
index c474ab8300210..1b5b380e8dcd8 100644
--- a/x-pack/plugin/security/build.gradle
+++ b/x-pack/plugin/security/build.gradle
@@ -43,7 +43,7 @@ dependencies {
     compile "net.shibboleth.utilities:java-support:7.5.1"
     compile "org.apache.santuario:xmlsec:2.1.4"
     compile "io.dropwizard.metrics:metrics-core:3.2.2"
-    compile ("org.cryptacular:cryptacular:1.2.3") {
+    compile ("org.cryptacular:cryptacular:1.2.4") {
         exclude group: 'org.bouncycastle'
     }
     compile "org.slf4j:slf4j-api:${versions.slf4j}"
diff --git a/x-pack/plugin/security/licenses/cryptacular-1.2.3.jar.sha1 b/x-pack/plugin/security/licenses/cryptacular-1.2.3.jar.sha1
deleted file mode 100644
index 9b5ebbac8b66f..0000000000000
--- a/x-pack/plugin/security/licenses/cryptacular-1.2.3.jar.sha1
+++ /dev/null
@@ -1 +0,0 @@
-7b0398d04a68ff7f58657938b3bdc5f2799b4b49
\ No newline at end of file
diff --git a/x-pack/plugin/security/licenses/cryptacular-1.2.4.jar.sha1 b/x-pack/plugin/security/licenses/cryptacular-1.2.4.jar.sha1
new file mode 100644
index 0000000000000..19095bb5dff64
--- /dev/null
+++ b/x-pack/plugin/security/licenses/cryptacular-1.2.4.jar.sha1
@@ -0,0 +1 @@
+4994c015d87886212683245d13e87f6fb903a760
\ No newline at end of file