diff --git a/README.md b/README.md
index dbbb635..a4c3d78 100644
--- a/README.md
+++ b/README.md
@@ -216,7 +216,7 @@ If unset, the two envs will have the following default values:
 
 -   `PARACHAIN_PALLET_ID`: `0x01`
 
--   `AUTHORIZE_UPGRADE_PREFIX`: `0x03`
+-   `AUTHORIZE_UPGRADE_PREFIX`: `0x02`
 
 ## Contributing
 
diff --git a/action.yml b/action.yml
index 6768bd9..bed9fdc 100644
--- a/action.yml
+++ b/action.yml
@@ -129,7 +129,7 @@ runs:
         PARACHAIN_PALLET_ID=${{ env.PARACHAIN_PALLET_ID }}
         PARACHAIN_PALLET_ID=${PARACHAIN_PALLET_ID:-0x01}
         AUTHORIZE_UPGRADE_PREFIX=${{ env.AUTHORIZE_UPGRADE_PREFIX }}
-        AUTHORIZE_UPGRADE_PREFIX=${AUTHORIZE_UPGRADE_PREFIX:-0x03}
+        AUTHORIZE_UPGRADE_PREFIX=${AUTHORIZE_UPGRADE_PREFIX:-0x02}
         echo "PARACHAIN_PALLET_ID=$PARACHAIN_PALLET_ID" >> $GITHUB_ENV
         echo "AUTHORIZE_UPGRADE_PREFIX=$AUTHORIZE_UPGRADE_PREFIX" >> $GITHUB_ENV
 
diff --git a/doc/parachain-overrides.adoc b/doc/parachain-overrides.adoc
index eb7eeb9..7a52984 100644
--- a/doc/parachain-overrides.adoc
+++ b/doc/parachain-overrides.adoc
@@ -6,4 +6,4 @@ Similar to https://github.com/chevdor/subwasm[subwasm], the parachain pallet ID
 If unset, the two envs will have the following default values:
 
 - `PARACHAIN_PALLET_ID`:      `0x01`
-- `AUTHORIZE_UPGRADE_PREFIX`: `0x03`
+- `AUTHORIZE_UPGRADE_PREFIX`: `0x02`