diff --git a/ci/github.sh b/ci/github.sh
index ee62d46fb1..28ee6cb7bf 100755
--- a/ci/github.sh
+++ b/ci/github.sh
@@ -34,6 +34,8 @@ meaningful in the github actions feature matrix UI.
             test_wasm
         elif [[ ${WASM:-} == wasm_simple ]]; then
             test_wasm_simple
+        elif [[ ${WASM:-} == wasm_emscripten ]]; then
+            test_wasm_emscripten
         elif [[ ${CORE:-} == no_std ]]; then
             test_core
         elif [[ ${EXHAUSTIVE_TZ:-} == all_tzs ]]; then
@@ -112,4 +114,8 @@ test_wasm_simple() {
     fi
 }
 
+test_wasm_emscripten() {
+    runt cargo build --target wasm32-unknown-emscripten
+}
+
 main "$@"