diff --git a/scripts/generate-clients/code-gen.js b/scripts/generate-clients/code-gen.js
index 3873716e9108b..256c0756d68d8 100644
--- a/scripts/generate-clients/code-gen.js
+++ b/scripts/generate-clients/code-gen.js
@@ -62,4 +62,4 @@ const spawnProcess = (command, args = [], options = {}) =>
     }
   });
 
-module.exports = { generateClients };
+module.exports = { generateClients, CODE_GEN_INPUT_DIR };
diff --git a/scripts/generate-clients/copy-to-clients.js b/scripts/generate-clients/copy-to-clients.js
index 278e4c2458e1a..10f61c6236ab4 100644
--- a/scripts/generate-clients/copy-to-clients.js
+++ b/scripts/generate-clients/copy-to-clients.js
@@ -86,4 +86,4 @@ async function copyToClients(clientsDir) {
   }
 }
 
-module.exports = { copyToClients };
+module.exports = { copyToClients, CODE_GEN_OUTPUT_DIR };
diff --git a/scripts/generate-clients/index.js b/scripts/generate-clients/index.js
index 36236958f6ebb..ce800c1d5d2f4 100644
--- a/scripts/generate-clients/index.js
+++ b/scripts/generate-clients/index.js
@@ -1,7 +1,8 @@
 const yargs = require("yargs");
 const path = require("path");
-const { generateClients } = require("./code-gen");
-const { copyToClients } = require("./copy-to-clients");
+const { emptyDirSync } = require("fs-extra");
+const { generateClients, CODE_GEN_INPUT_DIR } = require("./code-gen");
+const { copyToClients, CODE_GEN_OUTPUT_DIR } = require("./copy-to-clients");
 
 const CLIENTS_DIR = path.normalize(path.join(__dirname, "..", "..", "clients"));
 
@@ -20,6 +21,8 @@ const { models, output: clientsDir } = yargs
   try {
     await generateClients(models);
     await copyToClients(clientsDir);
+    emptyDirSync(CODE_GEN_INPUT_DIR);
+    emptyDirSync(CODE_GEN_OUTPUT_DIR);
   } catch (e) {
     console.log(e);
     process.exit(1);