diff --git a/api/package.json b/api/package.json
index c79b757c37..5562622831 100644
--- a/api/package.json
+++ b/api/package.json
@@ -42,6 +42,7 @@
   },
   "files": [
     "build/src/**/*.js",
+    "build/src/**/*.js.map",
     "build/src/**/*.d.ts",
     "doc",
     "LICENSE",
diff --git a/api/packages/opentelemetry-context-base/package.json b/api/packages/opentelemetry-context-base/package.json
index 061639d20a..c05d962ab8 100644
--- a/api/packages/opentelemetry-context-base/package.json
+++ b/api/packages/opentelemetry-context-base/package.json
@@ -34,6 +34,7 @@
   },
   "files": [
     "build/src/**/*.js",
+    "build/src/**/*.js.map",
     "build/src/**/*.d.ts",
     "doc",
     "LICENSE",