diff --git a/packages/tendermint-rpc/src/testutil.spec.ts b/packages/tendermint-rpc/src/testutil.spec.ts
index 3b699c67..97ba2c85 100644
--- a/packages/tendermint-rpc/src/testutil.spec.ts
+++ b/packages/tendermint-rpc/src/testutil.spec.ts
@@ -62,6 +62,19 @@ export const tendermintInstances = {
       appVersion: 1,
     },
   },
+  38: {
+    url: "localhost:11138",
+    version: "0.38.x",
+    blockTime: 500,
+    expected: {
+      chainId: /^dockerchain$/,
+      version: /^0\.38\.0-rc3$/,
+      appCreator: "Cosmoshi Netowoko",
+      p2pVersion: 8,
+      blockVersion: 11,
+      appVersion: 1,
+    },
+  },
 };
 
 export const defaultInstance: TendermintInstance = tendermintInstances[34];
diff --git a/scripts/tendermint/all_start.sh b/scripts/tendermint/all_start.sh
index 5c691cd8..0b7e1622 100755
--- a/scripts/tendermint/all_start.sh
+++ b/scripts/tendermint/all_start.sh
@@ -8,10 +8,12 @@ command -v shellcheck >/dev/null && shellcheck "$0"
 declare -a TM_IMAGES
 TM_IMAGES[34]="tendermint/tendermint:v0.34.19"
 TM_IMAGES[37]="cometbft/cometbft:v0.37.0-rc3"
+TM_IMAGES[38]="cometbft/cometbft:v0.38.0-rc3"
 
 declare -a TM_ROOTS
 TM_ROOTS[34]="/tendermint"
 TM_ROOTS[37]="/cometbft"
+TM_ROOTS[38]="/cometbft"
 
 SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
 
diff --git a/scripts/tendermint/all_stop.sh b/scripts/tendermint/all_stop.sh
index a2988c4f..9258bf20 100755
--- a/scripts/tendermint/all_stop.sh
+++ b/scripts/tendermint/all_stop.sh
@@ -4,7 +4,7 @@ command -v shellcheck >/dev/null && shellcheck "$0"
 
 SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
 
-for KEY in 34 37; do
+for KEY in 34 37 38; do
   export TENDERMINT_NAME="tendermint-$KEY"
 
   echo "Stopping $TENDERMINT_NAME ..."