diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
new file mode 100644
index 0000000..3c006e2
--- /dev/null
+++ b/.github/workflows/test.yml
@@ -0,0 +1,11 @@
+on: push
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - uses: aviate-labs/setup-dfx@v0.2.3
+        with:
+          dfx-version: 0.8.3
+          vessel-version: 0.6.2
+      - run: for i in test/*.mo ; do $(vessel bin)/moc $(vessel sources) -r $i ; done
diff --git a/test/SHA256.mo b/test/SHA256.mo
index a22e5f2..d0127e4 100644
--- a/test/SHA256.mo
+++ b/test/SHA256.mo
@@ -26,7 +26,7 @@ for (v in [
     ("abcdefghi", "19CC02F26DF43CC571BC9ED7B0C4D29224A3EC229529221725EF76D021C8326F"),
     ("abcdefghij", "72399361DA6A7754FEC986DCA5B7CBAF1C810A28DED4ABAF56B2106D06CB78B0"),
 ].vals()) {
-    assert(Hex.encode(SHA256.sum256(Blob.toArray(Text.encodeUtf8(v.0)))) == v.1);
+    assert(Hex.encode(SHA256.sum(Blob.toArray(Text.encodeUtf8(v.0)))) == v.1);
 };
 
 do {