diff --git a/extensions-core/druid-pac4j/src/main/java/org/apache/druid/security/pac4j/Pac4jSessionStore.java b/extensions-core/druid-pac4j/src/main/java/org/apache/druid/security/pac4j/Pac4jSessionStore.java
index 069a4ff2eb9a..02612819d7a8 100644
--- a/extensions-core/druid-pac4j/src/main/java/org/apache/druid/security/pac4j/Pac4jSessionStore.java
+++ b/extensions-core/druid-pac4j/src/main/java/org/apache/druid/security/pac4j/Pac4jSessionStore.java
@@ -64,7 +64,7 @@ public Pac4jSessionStore(String cookiePassphrase)
         "CBC",
         "PKCS5Padding",
         "PBKDF2WithHmacSHA256",
-        8,
+        128,
         65536,
         128
     );