diff --git a/docker-compose.yml b/docker-compose.yml
index 70dca9d..3ed4eaa 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -38,7 +38,7 @@ services:
       ARTEMIS_PASSWORD: artemis
       AMQ_EXTRA_ARGS: '--nio' # "aio" offers better performance, but less platforms support it
 
-  alice:
+  bob:
     healthcheck:
       test: "timeout 5 bash -c 'cat < /dev/null > /dev/tcp/localhost/9933' && exit 0 || exit 1"
       interval: 10s
@@ -55,7 +55,7 @@ services:
     volumes:
       - './docker/chain-entry.sh:/chain-entry.sh'
     entrypoint: '/chain-entry.sh'
-    command: ['--alice --chain dev']
+    command: ['--bob --chain dev']
 
   subquery:
     image: ${SUBQUERY_INDEXER_IMAGE}
@@ -71,14 +71,14 @@ services:
     depends_on:
       postgres:
         condition: service_started
-      alice:
+      bob:
         condition: service_healthy
     ports:
       - 3002:3000
     environment:
       START_BLOCK: 1
-      NETWORK_ENDPOINT: ws://alice:9944
-      NETWORK_HTTP_ENDPOINT: http://alice:9933
+      NETWORK_ENDPOINT: ws://bob:9944
+      NETWORK_HTTP_ENDPOINT: http://bob:9933
       DB_USER: '${PG_USER:-postgres}'
       DB_PASS: '${PG_PASSWORD:-postgres}'
       DB_DATABASE: '${PG_DB:-postgres}'
@@ -117,7 +117,7 @@ services:
     init: true
     restart: unless-stopped
     depends_on:
-      alice:
+      bob:
         condition: service_started
       vault:
         condition: service_started
@@ -130,7 +130,7 @@ services:
     ports:
       - ${REST_PORT:-3004}:3000
     environment:
-      POLYMESH_NODE_URL: 'ws://alice:9944'
+      POLYMESH_NODE_URL: 'ws://bob:9944'
       POLYMESH_MIDDLEWARE_V2_URL: 'http://graphql:3000'
       VAULT_URL: 'http://vault:8200/v1/transit'
       VAULT_TOKEN: 'root'
diff --git a/envs/7.3.0.env b/envs/7.3.0.env
new file mode 100644
index 0000000..005444e
--- /dev/null
+++ b/envs/7.3.0.env
@@ -0,0 +1,5 @@
+CHAIN_IMAGE=polymeshassociation/polymesh-ci:latest-ci-runtime-docker-image-debian
+SUBQUERY_INDEXER_IMAGE=polymeshassociation/polymesh-subquery:v18.0.2
+
+SUBQUERY_QUERY_IMAGE=onfinality/subql-query:v2.11.0
+REST_IMAGE=polymeshassociation/polymesh-rest-api:v7.0.0
diff --git a/scripts/setup.sh b/scripts/setup.sh
index 39f7c41..7efb645 100755
--- a/scripts/setup.sh
+++ b/scripts/setup.sh
@@ -7,7 +7,7 @@ SCRIPT_DIR=$(dirname "$0")
 IMAGE_REPO=polymeshassociation/polymesh
 
 # Chain version to test
-VERSION='7.0.0'
+VERSION='7.3.0'
 
 # service manifest
 ENV_FILE="$SCRIPT_DIR/../envs/$VERSION.env"
diff --git a/src/consts.ts b/src/consts.ts
index c3fce67..20fd019 100644
--- a/src/consts.ts
+++ b/src/consts.ts
@@ -1,9 +1,9 @@
 const prefixedDidLength = 66; // 64 bytes + 2 for `0x`
 
 export const wellKnown = {
-  alice: {
-    did: '0x01'.padEnd(prefixedDidLength, '0'),
-    mnemonic: '//Alice',
+  bob: {
+    did: '0x04'.padEnd(prefixedDidLength, '0'),
+    mnemonic: '//Bob',
   },
 } as const;
 
diff --git a/src/sdk/assets/manageDistributions.ts b/src/sdk/assets/manageDistributions.ts
index c4dc163..d2847e4 100644
--- a/src/sdk/assets/manageDistributions.ts
+++ b/src/sdk/assets/manageDistributions.ts
@@ -23,7 +23,7 @@ export const manageDistributions = async (
   const signingIdentity = await sdk.getSigningIdentity();
   assert(signingIdentity);
 
-  const alice = await sdk.identities.getIdentity({ did: wellKnown.alice.did });
+  const bob = await sdk.identities.getIdentity({ did: wellKnown.bob.did });
 
   // The signing identity should be an agent of the Asset and have appropriate permission
   const asset = await sdk.assets.getFungibleAsset({ ticker });
@@ -58,7 +58,7 @@ export const manageDistributions = async (
       // (optional) individuals can be excluded from distributions
       targets: {
         // identities can be specified with an Identity object or DID string
-        identities: [alice, '0x0200000000000000000000000000000000000000000000000000000000000000'],
+        identities: [bob, '0x0200000000000000000000000000000000000000000000000000000000000000'],
         treatment: TargetTreatment.Exclude,
       },
       // (optional) individual holders can be targeted with a different rate
diff --git a/src/sdk/connect.ts b/src/sdk/connect.ts
index 582e191..bd306e7 100644
--- a/src/sdk/connect.ts
+++ b/src/sdk/connect.ts
@@ -8,12 +8,12 @@ const { nodeUrl } = env;
 let sdk: Polymesh;
 
 /**
- * This function shows how to create a Polymesh SDK instance configured with `//Alice` as the default signing key
+ * This function shows how to create a Polymesh SDK instance configured with `//Bob` as the default signing key
  */
 export async function getPolymeshSdk(): Promise<Polymesh> {
   // Note, different signing managers can be found [here](https://github.com/PolymeshAssociation/signing-managers#projects)
   const signingManager = await LocalSigningManager.create({
-    accounts: [{ uri: '//Alice' }],
+    accounts: [{ uri: '//Bob' }],
   });
 
   if (!sdk) {
diff --git a/src/sdk/settlements/manageTrustedClaimIssuers.ts b/src/sdk/settlements/manageTrustedClaimIssuers.ts
index b75b628..69990f0 100644
--- a/src/sdk/settlements/manageTrustedClaimIssuers.ts
+++ b/src/sdk/settlements/manageTrustedClaimIssuers.ts
@@ -35,11 +35,11 @@ export const manageTrustedClaimIssuers = async (
   await addClaimIssuerTx.run();
   assert(addClaimIssuerTx.isSuccess);
 
-  // Make Alice the only trusted issuer for certain claims
+  // Make Bob the only trusted issuer for certain claims
   const setTrustedClaimIssuersTx = await compliance.trustedClaimIssuers.set({
     claimIssuers: [
       {
-        identity: wellKnown.alice.did,
+        identity: wellKnown.bob.did,
         trustedFor: [ClaimType.Accredited, ClaimType.Affiliate],
       },
     ],
@@ -52,7 +52,7 @@ export const manageTrustedClaimIssuers = async (
 
   // Remove a trusted issuers. Identities no longer compliant will be able to send, but not receive the Asset
   const removeClaimIssuerTx = await compliance.trustedClaimIssuers.remove({
-    claimIssuers: [wellKnown.alice.did],
+    claimIssuers: [wellKnown.bob.did],
   });
   await removeClaimIssuerTx.run();
   assert(removeClaimIssuerTx.isSuccess);
diff --git a/src/sdk/settlements/transferRestrictions.ts b/src/sdk/settlements/transferRestrictions.ts
index 84e8d30..a24d2f6 100644
--- a/src/sdk/settlements/transferRestrictions.ts
+++ b/src/sdk/settlements/transferRestrictions.ts
@@ -73,7 +73,7 @@ export const transferRestrictions = async (sdk: Polymesh, asset: FungibleAsset):
   // Create a restriction to limit the Asset to have at most 10 holders
   const addCountRestrictionTx = await asset.transferRestrictions.count.addRestriction({
     count: new BigNumber(10),
-    exemptedIdentities: [wellKnown.alice.did, identity],
+    exemptedIdentities: [wellKnown.bob.did, identity],
   });
   await addCountRestrictionTx.run();
   assert(addCountRestrictionTx.isSuccess);