diff --git a/src/ci/run.sh b/src/ci/run.sh
index 5b1fb676187b1..44db6b92c95d9 100755
--- a/src/ci/run.sh
+++ b/src/ci/run.sh
@@ -46,7 +46,7 @@ fi
 #
 # FIXME: need a scheme for changing this `nightly` value to `beta` and `stable`
 #        either automatically or manually.
-export RUST_RELEASE_CHANNEL=nightly
+export RUST_RELEASE_CHANNEL=beta
 if [ "$DEPLOY$DEPLOY_ALT" != "" ]; then
   RUST_CONFIGURE_ARGS="$RUST_CONFIGURE_ARGS --release-channel=$RUST_RELEASE_CHANNEL"
   RUST_CONFIGURE_ARGS="$RUST_CONFIGURE_ARGS --enable-llvm-static-stdcpp"
diff --git a/src/stage0.txt b/src/stage0.txt
index 435cfd2f6db4e..c694667715fad 100644
--- a/src/stage0.txt
+++ b/src/stage0.txt
@@ -12,9 +12,9 @@
 # source tarball for a stable release you'll likely see `1.x.0` for rustc and
 # `0.x.0` for Cargo where they were released on `date`.
 
-date: 2018-05-10
-rustc: beta
-cargo: beta
+date: 2018-06-20
+rustc: 1.27.0
+cargo: 0.28.0
 
 # When making a stable release the process currently looks like:
 #
@@ -34,4 +34,4 @@ cargo: beta
 # looking at a beta source tarball and it's uncommented we'll shortly comment it
 # out.
 
-#dev: 1
+dev: 1
diff --git a/src/tools/rust-installer b/src/tools/rust-installer
index 118e078c5badd..89414e44dc948 160000
--- a/src/tools/rust-installer
+++ b/src/tools/rust-installer
@@ -1 +1 @@
-Subproject commit 118e078c5badd520d18b92813fd88789c8d341ab
+Subproject commit 89414e44dc94844888e59c08bc31dcccb1792800