diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 7273db20c..7835cded1 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -8,9 +8,9 @@ jobs:
         os: [macOS-10.15, Ubuntu-18.04]
         include:
           - os: macOS-10.15
-            toolchain: https://github.com/swiftwasm/swift/releases/download/swift-wasm-DEVELOPMENT-SNAPSHOT-2020-06-12-a/swift-wasm-DEVELOPMENT-SNAPSHOT-2020-06-12-a-osx.tar.gz
+            toolchain: https://github.com/swiftwasm/swift/releases/download/swift-wasm-5.3-SNAPSHOT-2020-08-10-a/swift-wasm-5.3-SNAPSHOT-2020-08-10-a-osx.tar.gz
           - os: Ubuntu-18.04
-            toolchain: https://github.com/swiftwasm/swift/releases/download/swift-wasm-DEVELOPMENT-SNAPSHOT-2020-06-12-a/swift-wasm-DEVELOPMENT-SNAPSHOT-2020-06-12-a-linux.tar.gz
+            toolchain: https://github.com/swiftwasm/swift/releases/download/swift-wasm-5.3-SNAPSHOT-2020-08-10-a/swift-wasm-5.3-SNAPSHOT-2020-08-10-a-linux.tar.gz
     runs-on: ${{ matrix.os }}
     steps:
       - name: Checkout
diff --git a/.swift-version b/.swift-version
index 55167b9ac..64ccfaeff 100644
--- a/.swift-version
+++ b/.swift-version
@@ -1 +1 @@
-wasm-DEVELOPMENT-SNAPSHOT-2020-06-12-a
+wasm-5.3-SNAPSHOT-2020-08-10-a