diff --git a/default.env b/default.env
index 8878781a..e595aa73 100644
--- a/default.env
+++ b/default.env
@@ -114,7 +114,7 @@ CL_EXTRAS=
 VC_EXTRAS=
 
 # Heap for Besu and Teku, both written in Java. Sets JAVA_OPTS to this
-# value, for example BESU_HEAP=-Xmx8g to set it to 8g. If left empty, the
+# value, for example TEKU_HEAP=-Xmx12g to set it to 12g. If left empty, the
 # defaults in besu.yml and teku.yml are used.
 BESU_HEAP=
 TEKU_HEAP=
diff --git a/teku-cl-only.yml b/teku-cl-only.yml
index 78c42d3e..6d679b0e 100644
--- a/teku-cl-only.yml
+++ b/teku-cl-only.yml
@@ -27,7 +27,7 @@ services:
       - /etc/localtime:/etc/localtime:ro
       - jwtsecret:/var/lib/teku/ee-secret
     environment:
-      - JAVA_OPTS=${TEKU_HEAP:--Xmx5g}
+      - JAVA_OPTS=${TEKU_HEAP:--Xmx6g}
       - RAPID_SYNC_URL=${RAPID_SYNC_URL}
       - JWT_SECRET=${JWT_SECRET}
       - MEV_BOOST=${MEV_BOOST}
diff --git a/teku.yml b/teku.yml
index fd9ab4e7..2dd9f3de 100644
--- a/teku.yml
+++ b/teku.yml
@@ -27,7 +27,7 @@ services:
       - /etc/localtime:/etc/localtime:ro
       - jwtsecret:/var/lib/teku/ee-secret
     environment:
-      - JAVA_OPTS=${TEKU_HEAP:--Xmx5g}
+      - JAVA_OPTS=${TEKU_HEAP:--Xmx6g}
       - RAPID_SYNC_URL=${RAPID_SYNC_URL}
       - JWT_SECRET=${JWT_SECRET}
       - MEV_BOOST=${MEV_BOOST}