diff --git a/arb-alephzero-mainnet-pbss.yml b/arb-alephzero-mainnet-pbss.yml
index 25a62187..708b7066 100644
--- a/arb-alephzero-mainnet-pbss.yml
+++ b/arb-alephzero-mainnet-pbss.yml
@@ -2,7 +2,7 @@ version: '3.1'
 
 services:
   arb-alephzero-mainnet:
-    image: 'offchainlabs/nitro-node:${NITRO_VERSION:-v3.1.0-7d1d84c}'
+    image: 'offchainlabs/nitro-node:${NITRO_VERSION:-v3.2.1-d81324d}'
     stop_grace_period: 3m
     user: root
     volumes:
diff --git a/arb-alephzero-sepolia-pbss.yml b/arb-alephzero-sepolia-pbss.yml
index a29a187b..8eaf2e3b 100644
--- a/arb-alephzero-sepolia-pbss.yml
+++ b/arb-alephzero-sepolia-pbss.yml
@@ -2,7 +2,7 @@ version: '3.1'
 
 services:
   arb-alephzero-sepolia:
-    image: 'offchainlabs/nitro-node:${NITRO_VERSION:-v3.1.0-7d1d84c}'
+    image: 'offchainlabs/nitro-node:${NITRO_VERSION:-v3.2.1-d81324d}'
     stop_grace_period: 3m
     user: root
     volumes: