diff --git a/packages/backend-core/.npmignore b/packages/backend-core/.npmignore
new file mode 100644
index 0000000000..d1b8eaa79b
--- /dev/null
+++ b/packages/backend-core/.npmignore
@@ -0,0 +1,7 @@
+node_modules/
+tsconfig.build.json
+tsconfig.json
+jest.config.ts
+jest-testcontainers-config.js
+__mocks__
+scripts
diff --git a/packages/shared-core/.npmignore b/packages/shared-core/.npmignore
new file mode 100644
index 0000000000..4926fbc5fd
--- /dev/null
+++ b/packages/shared-core/.npmignore
@@ -0,0 +1,3 @@
+node_modules/
+tsconfig.build.json
+tsconfig.json