diff --git a/tsconfig.build.json b/tsconfig.build.json
index e90927e..2e2f587 100644
--- a/tsconfig.build.json
+++ b/tsconfig.build.json
@@ -18,5 +18,10 @@
 		"noImplicitReturns": true,
 		"lib": ["DOM", "ES2018", "ES2020"]
 	},
-	"include": ["packages/**/src/**/*"]
+	/**
+	 * Just for the sample, as it seems to include the specs files.
+	 * This is valid as long as we keep the tests in TS, as we plan
+	 * to move them to JS + TSDoc
+	 */
+	"exclude": ["packages/**/specs/**/*"]
 }