diff --git a/src/Microsoft.Extensions.Testing.Abstractions/project.json b/src/Microsoft.Extensions.Testing.Abstractions/project.json
index 1bb545dca..da1e2e6fa 100644
--- a/src/Microsoft.Extensions.Testing.Abstractions/project.json
+++ b/src/Microsoft.Extensions.Testing.Abstractions/project.json
@@ -12,7 +12,7 @@
       "target": "project"
     },
     "Microsoft.DiaSymReader": "1.0.6",
-    "Microsoft.DiaSymReader.Native": "1.3.3"
+    "Microsoft.DiaSymReader.Native": "1.4.0-rc"
   },
   "frameworks": {
     "net451": {},
diff --git a/src/compilers/project.json b/src/compilers/project.json
index a6188cd2f..2af0f5599 100644
--- a/src/compilers/project.json
+++ b/src/compilers/project.json
@@ -10,7 +10,7 @@
     },
     "Microsoft.CodeAnalysis.CSharp": "1.3.0-beta1-20160429-01",
     "Microsoft.Net.Compilers.netcore": "1.3.0-beta1-20160429-01",
-    "Microsoft.DiaSymReader.Native": "1.3.3"
+    "Microsoft.DiaSymReader.Native": "1.4.0-rc"
   },
   "frameworks": {
     "netstandard1.5": {