diff --git a/WORKSPACE b/WORKSPACE
index 62c4341dfd..f3739a3eb6 100644
--- a/WORKSPACE
+++ b/WORKSPACE
@@ -16,8 +16,7 @@ node_repositories(package_json = ["//:package.json"])
 git_repository(
     name = "build_bazel_rules_typescript",
     remote = "https://github.com/bazelbuild/rules_typescript.git",
-#    tag = "0.7.1+",
-    commit = "89d2c75066bea3d9c942f29dd1d2ea543c58d6d5"
+    commit = "c4ea003acd7d42269b81a2d25eb832972cd24912"
 )
 
 load("@build_bazel_rules_typescript//:setup.bzl", "ts_setup_workspace")
diff --git a/integration/bazel/WORKSPACE b/integration/bazel/WORKSPACE
index 57fca31224..1ab8e58e3f 100644
--- a/integration/bazel/WORKSPACE
+++ b/integration/bazel/WORKSPACE
@@ -14,8 +14,7 @@ node_repositories(package_json = ["//:package.json"])
 git_repository(
     name = "build_bazel_rules_typescript",
     remote = "https://github.com/bazelbuild/rules_typescript.git",
-#    tag = "0.6.0",
-    commit = "89d2c75066bea3d9c942f29dd1d2ea543c58d6d5"
+    commit = "c4ea003acd7d42269b81a2d25eb832972cd24912"
 )
 
 load("@build_bazel_rules_typescript//:setup.bzl", "ts_setup_workspace")
diff --git a/packages/bazel/src/ngc-wrapped/index.ts b/packages/bazel/src/ngc-wrapped/index.ts
index 1b5dde203c..0250c981d5 100644
--- a/packages/bazel/src/ngc-wrapped/index.ts
+++ b/packages/bazel/src/ngc-wrapped/index.ts
@@ -189,15 +189,18 @@ export function compile({allowNonHermeticReads, allDepsCompiledWithBazel = true,
     }
     return bazelOpts.workspaceName + '/' + result;
   };
-  ngHost.toSummaryFileName = (fileName: string, referringSrcFileName: string) =>
-      relativeToRootDirs(fileName, compilerOpts.rootDirs).replace(EXT, '');
+  ngHost.toSummaryFileName = (fileName: string, referringSrcFileName: string) => path.join(
+      bazelOpts.workspaceName,
+      relativeToRootDirs(fileName, compilerOpts.rootDirs).replace(EXT, ''));
   if (allDepsCompiledWithBazel) {
     // Note: The default implementation would work as well,
     // but we can be faster as we know how `toSummaryFileName` works.
     // Note: We can't do this if some deps have been compiled with the command line,
     // as that has a different implementation of fromSummaryFileName / toSummaryFileName
-    ngHost.fromSummaryFileName = (fileName: string, referringLibFileName: string) =>
-        path.resolve(bazelBin, fileName) + '.d.ts';
+    ngHost.fromSummaryFileName = (fileName: string, referringLibFileName: string) => {
+      const workspaceRelative = fileName.split('/').splice(1).join('/');
+      return path.resolve(bazelBin, workspaceRelative) + '.d.ts';
+    };
   }
 
   const emitCallback: ng.TsEmitCallback = ({