diff --git a/user-restricted-separate-auth-tutorials/nhs-login/java/pom.xml b/user-restricted-separate-auth-tutorials/nhs-login/java/pom.xml
index 00cde81..ef52f42 100644
--- a/user-restricted-separate-auth-tutorials/nhs-login/java/pom.xml
+++ b/user-restricted-separate-auth-tutorials/nhs-login/java/pom.xml
@@ -37,7 +37,7 @@
     <dependency>
       <groupId>org.bouncycastle</groupId>
       <artifactId>bcpkix-jdk18on</artifactId>
-      <version>1.71</version>
+      <version>1.73</version>
     </dependency>
     <dependency>
       <groupId>io.jsonwebtoken</groupId>