diff --git a/fendermint/testing/graph-test/scripts/init.sh b/fendermint/testing/graph-test/scripts/init.sh
index 461ccfa3e1..8fc376fb1d 100755
--- a/fendermint/testing/graph-test/scripts/init.sh
+++ b/fendermint/testing/graph-test/scripts/init.sh
@@ -7,6 +7,7 @@ set -e
 KEYS_DIR=/data/keys
 CMT_DIR=/data/${NODE_NAME}/cometbft
 GENESIS_FILE=/data/genesis.json
+SEALED_GENESIS_FILE=/data/sealed.car
 
 # Create a genesis file
 fendermint \
@@ -47,10 +48,20 @@ fendermint \
   genesis --genesis-file $GENESIS_FILE \
   add-validator --public-key $KEYS_DIR/$VALIDATOR_NAME.pk --power 1
 
+# Seal the genesis state
+fendermint \
+  genesis --genesis-file $GENESIS_FILE \
+  ipc \
+    seal-state \
+      --builtin-actors-path /fendermint/bundle.car \
+      --custom-actors-path /fendermint/custom_actors_bundle.car \
+      --artifacts-path /fendermint/contracts \
+      --output-path "${SEALED_GENESIS_FILE}"
+
 # Convert FM genesis to CMT
 fendermint \
   genesis --genesis-file $GENESIS_FILE \
-  into-tendermint --out $CMT_DIR/config/genesis.json
+  into-tendermint --out $CMT_DIR/config/genesis.json --sealed "${SEALED_GENESIS_FILE}"
 
 # Copy the default validator key
 cp $KEYS_DIR/$VALIDATOR_NAME.priv_validator_key.json \
diff --git a/fendermint/testing/smoke-test/scripts/init.sh b/fendermint/testing/smoke-test/scripts/init.sh
index 1ccbcc77dc..c3fa8d63a5 100755
--- a/fendermint/testing/smoke-test/scripts/init.sh
+++ b/fendermint/testing/smoke-test/scripts/init.sh
@@ -7,6 +7,7 @@ set -e
 KEYS_DIR=/data/keys
 CMT_DIR=/data/${NODE_NAME}/cometbft
 GENESIS_FILE=/data/genesis.json
+SEALED_GENESIS_FILE=/data/sealed.car
 
 # Create a genesis file
 fendermint \
@@ -63,10 +64,20 @@ fendermint \
     --msg-fee 10 \
     --majority-percentage 66
 
+# Seal the genesis state
+fendermint \
+  genesis --genesis-file $GENESIS_FILE \
+  ipc \
+    seal-state \
+      --builtin-actors-path /fendermint/bundle.car \
+      --custom-actors-path /fendermint/custom_actors_bundle.car \
+      --artifacts-path /fendermint/contracts \
+      --output-path "${SEALED_GENESIS_FILE}"
+
 # Convert FM genesis to CMT
 fendermint \
   genesis --genesis-file $GENESIS_FILE \
-  into-tendermint --out $CMT_DIR/config/genesis.json
+  into-tendermint --out $CMT_DIR/config/genesis.json --sealed "${SEALED_GENESIS_FILE}"
 
 # Convert FM validator key to CMT
 fendermint \
diff --git a/fendermint/testing/snapshot-test/scripts/init.sh b/fendermint/testing/snapshot-test/scripts/init.sh
index 011bbfa75d..9e75058d99 100755
--- a/fendermint/testing/snapshot-test/scripts/init.sh
+++ b/fendermint/testing/snapshot-test/scripts/init.sh
@@ -7,6 +7,7 @@ set -e
 KEYS_DIR=/data/keys
 CMT_DIR=/data/${NODE_NAME}/cometbft
 GENESIS_FILE=/data/genesis.json
+SEALED_GENESIS_FILE=/data/sealed.car
 
 # Create a genesis file
 fendermint \
@@ -42,10 +43,20 @@ fendermint \
   genesis --genesis-file $GENESIS_FILE \
   add-validator --public-key $KEYS_DIR/$VALIDATOR_NAME.pk --power 1
 
+# Seal the genesis state
+fendermint \
+  genesis --genesis-file $GENESIS_FILE \
+  ipc \
+    seal-state \
+      --builtin-actors-path /fendermint/bundle.car \
+      --custom-actors-path /fendermint/custom_actors_bundle.car \
+      --artifacts-path /fendermint/contracts \
+      --output-path "${SEALED_GENESIS_FILE}"
+
 # Convert FM genesis to CMT
 fendermint \
   genesis --genesis-file $GENESIS_FILE \
-  into-tendermint --out $CMT_DIR/config/genesis.json
+  into-tendermint --out $CMT_DIR/config/genesis.json --sealed "${SEALED_GENESIS_FILE}"
 
 # Copy the default validator key
 cp $KEYS_DIR/$VALIDATOR_NAME.priv_validator_key.json \