diff --git a/environment-wasm-build.yml b/environment-wasm-build.yml
index 69a6ecd4..79425ad2 100644
--- a/environment-wasm-build.yml
+++ b/environment-wasm-build.yml
@@ -12,6 +12,6 @@ dependencies:
   # JupyterLite
   - jupyterlite-core >0.6
   - jupyter_server
-  - jupyterlite-xeus
+  - jupyterlite-xeus>=4.5.2
   - # widgets
   - ipywidgets
\ No newline at end of file
diff --git a/environment-wasm-host.yml b/environment-wasm-host.yml
index 19c17b99..b35bc5d0 100644
--- a/environment-wasm-host.yml
+++ b/environment-wasm-host.yml
@@ -11,7 +11,7 @@ dependencies:
   - pybind11_json
   - numpy
   - xeus-lite
-  - xeus>=6.0.4
+  - xeus==6.0.3
   - pyjs >=4,<5
   - libpython
   - zstd