diff --git a/.github/workflows/rust.yml b/.github/workflows/rust.yml
index a208fb5..0a3a92d 100644
--- a/.github/workflows/rust.yml
+++ b/.github/workflows/rust.yml
@@ -57,7 +57,9 @@ jobs:
 
     - name: Run wasm tests
       working-directory: ./wasm-tests
-      run: wasm-pack test  --headless --firefox
+      run: |
+        cargo tree
+        wasm-pack test  --headless --firefox
 
       # macro tests should be last, because they produce scratchpad.rs, which my not compile
     - name: Run macro tests
diff --git a/wasm-tests/Cargo.toml b/wasm-tests/Cargo.toml
index e902850..2cf78fc 100644
--- a/wasm-tests/Cargo.toml
+++ b/wasm-tests/Cargo.toml
@@ -11,7 +11,10 @@ crate-type = ["cdylib", "rlib"]
 default = ["console_error_panic_hook"]
 
 [dependencies]
-wasm-bindgen = "0.2.63"
+ascent = { path = "../ascent", features = ["wasm-bindgen"] }
+
+# pinning to this version because higher versions don't work on rust 1.66
+bumpalo = "=3.14"
 
 # The `console_error_panic_hook` crate provides better debugging of panics by
 # logging them with `console.error`. This is great for development, but requires
@@ -19,8 +22,6 @@ wasm-bindgen = "0.2.63"
 # code size when deploying.
 console_error_panic_hook = { version = "0.1.6", optional = true }
 
-ascent = { path = "../ascent", features = ["wasm-bindgen"] }
-
 [dev-dependencies]
 wasm-bindgen-test = "0.3.13"