diff --git a/.make-packages.js b/.make-packages.js
index 0fd4c66a0b..b5e8c894e1 100644
--- a/.make-packages.js
+++ b/.make-packages.js
@@ -29,6 +29,7 @@ const UMD_ROOT = ROOT + 'global/';
 const ESM5_FOR_ROLLUP_ROOT = ROOT + 'esm5_for_rollup/';
 const LEGACY_REEXPORT_ROOT = ROOT + 'legacy-reexport/';
 const TYPE_ROOT = ROOT + 'typings/';
+const MIGRATION_PKG = ROOT + 'migrations/';
 const PKG_ROOT = ROOT + 'package/';
 const CJS_PKG = PKG_ROOT + '';
 const ESM5_PKG = PKG_ROOT + '_esm5/';
@@ -139,7 +140,7 @@ fs.copySync('src/testing/package.json', PKG_ROOT + '/testing/package.json');
 fs.copySync('src/internal-compatibility/package.json', PKG_ROOT + '/internal-compatibility/package.json');
 
 // Copy over migrations
-fs.copySync('migrations/', PKG_ROOT + 'migrations/');
+fs.copySync(MIGRATION_PKG, PKG_ROOT + 'migrations/');
 
 if (fs.existsSync(UMD_ROOT)) {
   fs.copySync(UMD_ROOT, UMD_PKG);
diff --git a/package-lock.json b/package-lock.json
index b48cc4ae29..7ee1e9c271 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,6 +1,6 @@
 {
   "name": "@reactivex/rxjs",
-  "version": "6.0.0-tactical-rc.1",
+  "version": "6.0.0-turbo-rc.4",
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
@@ -124,6 +124,12 @@
         "@types/sinon": "4.1.3"
       }
     },
+    "@types/source-map": {
+      "version": "0.5.2",
+      "resolved": "https://registry.npmjs.org/@types/source-map/-/source-map-0.5.2.tgz",
+      "integrity": "sha512-++w4WmMbk3dS3UeHGzAG+xJOSz5Xqtjys/TBkqG3qp3SeWE7Wwezqe5eB7B51cxUyh4PW7bwVotpsLdBK0D8cw==",
+      "dev": true
+    },
     "@types/strip-bom": {
       "version": "3.0.0",
       "resolved": "https://registry.npmjs.org/@types/strip-bom/-/strip-bom-3.0.0.tgz",
diff --git a/package.json b/package.json
index 0a9773a975..f736221bd9 100644
--- a/package.json
+++ b/package.json
@@ -75,13 +75,14 @@
     "precommit": "lint-staged",
     "commitmsg": "validate-commit-msg",
     "info": "npm-scripts-info",
-    "build_all": "npm-run-all compat_build_all clean_dist copy_sources build_cjs build_esm5 build_esm2015 build_esm5_for_rollup build_umd build_legacy_reexport generate_packages copy_for_tests",
+    "build_all": "npm-run-all compat_build_all clean_dist copy_sources build_cjs build_esm5 build_esm2015 build_esm5_for_rollup build_umd build_legacy_reexport build_migrations generate_packages copy_for_tests",
     "build_cjs": "npm-run-all clean_dist_cjs compile_dist_cjs",
     "build_esm5": "npm-run-all clean_dist_esm5 compile_dist_esm5",
     "build_esm5_for_rollup": "npm-run-all clean_dist_esm5_for_rollup compile_dist_esm5_for_rollup && mkdirp dist/esm5_for_rollup/node_modules && shx cp -r ./dist-compat/package ./dist/esm5_for_rollup/node_modules/rxjs-compat",
     "build_esm2015": "npm-run-all clean_dist_esm2015 compile_dist_esm2015",
     "build_esm2015_for_docs": "npm-run-all clean_dist_esm2015 compile_dist_esm2015_for_docs",
     "build_legacy_reexport": "npm-run-all compile_legacy_reexport",
+    "build_migrations": "npm-run-all clean_dist_migrations compile_dist_migrations",
     "build_closure_core": "node ./tools/make-closure-core.js",
     "build_global": "npm-run-all clean_dist_global build_esm5_for_rollup && mkdirp ./dist/global && node ./tools/make-umd-bundle.js && npm-run-all build_closure_core clean_dist_esm5_for_rollup",
     "build_umd": "npm-run-all clean_dist_global && mkdirp ./dist/global && node ./tools/make-umd-bundle.js && npm-run-all build_closure_core",
@@ -96,12 +97,14 @@
     "clean_dist_esm5_for_rollup": "shx rm -rf ./dist/esm5_for_rollup",
     "clean_dist_esm2015": "shx rm -rf ./dist/esm2015",
     "clean_dist_global": "shx rm -rf ./dist/global",
+    "clean_dist_migrations": "shx rm -rf ./dist/migrations",
     "commit": "git-cz",
     "compile_dist_cjs": "tsc -p ./tsconfig/tsconfig.cjs.json",
     "compile_dist_esm5": "tsc -p ./tsconfig/tsconfig.esm5.json",
     "compile_dist_esm2015": "tsc -p ./tsconfig/tsconfig.esm2015.json",
     "compile_dist_esm2015_for_docs": "tsc ./dist/src/internal/Rx.ts ./dist/src/add/observable/of.ts ./dist/src/MiscJSDoc.ts -m es2015   --sourceMap --outDir ./dist/es6 --target es2015 -d --diagnostics --pretty --noImplicitAny --noImplicitReturns --noImplicitThis --suppressImplicitAnyIndexErrors --moduleResolution node",
     "compile_dist_esm5_for_rollup": "tsc -p ./tsconfig/tsconfig.esm5.rollup.json",
+    "compile_dist_migrations": "tsc -p ./tsconfig/tsconfig.migrations.json",
     "compile_legacy_reexport": "tsc -p ./tsconfig/tsconfig.legacy-reexport.json",
     "copy_sources": "mkdirp dist && shx cp -r ./src/ ./dist/src",
     "copy_for_tests": "shx rm -rf ./spec-build && shx cp -r ./spec/ ./spec-build/ && mkdirp ./spec-build/node_modules && shx cp -r ./dist/package/ ./spec-build/node_modules/rxjs && shx cp -r ./dist-compat/package/ ./spec-build/node_modules/rxjs-compat",
@@ -197,6 +200,7 @@
     "@types/node": "9.4.5",
     "@types/sinon": "4.1.3",
     "@types/sinon-chai": "2.7.29",
+    "@types/source-map": "^0.5.2",
     "babel-polyfill": "6.26.0",
     "benchmark": "2.1.0",
     "benchpress": "2.0.0-beta.1",
diff --git a/tsconfig.base.json b/tsconfig.base.json
index 6d0829bd41..97ffda3726 100644
--- a/tsconfig.base.json
+++ b/tsconfig.base.json
@@ -29,4 +29,4 @@
   "bazelOptions": {
     "suppressTsconfigOverrideWarnings": true
   }
-}
\ No newline at end of file
+}
diff --git a/tsconfig/tsconfig.migrations.json b/tsconfig/tsconfig.migrations.json
new file mode 100644
index 0000000000..200c52687c
--- /dev/null
+++ b/tsconfig/tsconfig.migrations.json
@@ -0,0 +1,11 @@
+{
+  "extends": "../tsconfig.base.json",
+  "compilerOptions": {
+    "noEmit": false,
+    "outDir": "../dist/migrations"
+  },
+  "files": [
+    // entry-points
+    "../migrations/update-6_0_0/index.ts"
+  ]
+}