diff --git a/bin/zk b/bin/zk
index fec96763b788..868c4e338cdf 100755
--- a/bin/zk
+++ b/bin/zk
@@ -41,7 +41,7 @@ check_subdirectory
 check_yarn_version
 if [ -z "$1" ]; then
     cd $ZKSYNC_HOME
-    run_retried yarn install --frozen-lockfile && yarn zk build
+    run_retried yarn install --frozen-lockfile && yarn utils build && yarn zk build
 else
     # can't start this with yarn since it has quirks with `--` as an argument
     node -- $ZKSYNC_HOME/infrastructure/zk/build/index.js "$@"
diff --git a/etc/utils/.gitignore b/etc/utils/.gitignore
new file mode 100644
index 000000000000..796b96d1c402
--- /dev/null
+++ b/etc/utils/.gitignore
@@ -0,0 +1 @@
+/build
diff --git a/etc/utils/package.json b/etc/utils/package.json
index 47f2b9f238d1..6ce76330c8ea 100644
--- a/etc/utils/package.json
+++ b/etc/utils/package.json
@@ -1,8 +1,9 @@
 {
     "name": "utils",
     "version": "0.1.0",
-    "main": "src/index.ts",
     "license": "MIT",
+    "main": "build/index.js",
+    "types": "build/index.d.ts",
     "scripts": {
         "build": "tsc"
     },
diff --git a/etc/utils/tsconfig.json b/etc/utils/tsconfig.json
new file mode 100644
index 000000000000..f96df8d60edb
--- /dev/null
+++ b/etc/utils/tsconfig.json
@@ -0,0 +1,15 @@
+{
+    "compilerOptions": {
+        "target": "es2019",
+        "module": "commonjs",
+        "outDir": "build",
+        "strict": true,
+        "esModuleInterop": true,
+        "noEmitOnError": true,
+        "skipLibCheck": true,
+        "declaration": true
+    },
+    "files": [
+        "src/index.ts"
+    ]
+}
diff --git a/zk_toolbox/crates/zk_supervisor/src/commands/integration_tests.rs b/zk_toolbox/crates/zk_supervisor/src/commands/integration_tests.rs
index 47a886983759..c5b1229dd2ce 100644
--- a/zk_toolbox/crates/zk_supervisor/src/commands/integration_tests.rs
+++ b/zk_toolbox/crates/zk_supervisor/src/commands/integration_tests.rs
@@ -36,6 +36,7 @@ fn build_repository(shell: &Shell, ecosystem_config: &EcosystemConfig) -> anyhow
     let spinner = Spinner::new(MSG_INTEGRATION_TESTS_BUILDING_DEPENDENCIES);
 
     Cmd::new(cmd!(shell, "yarn install --frozen-lockfile")).run()?;
+    Cmd::new(cmd!(shell, "yarn utils build")).run()?;
 
     spinner.finish();
     Ok(())