diff --git a/bindings/pydeck-carto/pydeck_carto/layer.py b/bindings/pydeck-carto/pydeck_carto/layer.py
index 40437d48f43..eb2622a9c00 100644
--- a/bindings/pydeck-carto/pydeck_carto/layer.py
+++ b/bindings/pydeck-carto/pydeck_carto/layer.py
@@ -1,7 +1,7 @@
 import pydeck as pdk
 
 H3_VERSION = "~3.7.*"
-DECKGL_VERSION = "~8.8.*"
+DECKGL_VERSION = "~8.9.*"
 
 LIBRARIES_TO_INCLUDE = [
     f"npm/h3-js@{H3_VERSION}/dist/h3-js.umd.js",
diff --git a/bindings/pydeck/pydeck/frontend_semver.py b/bindings/pydeck/pydeck/frontend_semver.py
index 8d9c8cc7f49..576afb69826 100644
--- a/bindings/pydeck/pydeck/frontend_semver.py
+++ b/bindings/pydeck/pydeck/frontend_semver.py
@@ -1 +1 @@
-DECKGL_SEMVER = "~8.8.*"
+DECKGL_SEMVER = "~8.9.*"
diff --git a/bindings/pydeck/pydeck/io/html.py b/bindings/pydeck/pydeck/io/html.py
index 0e98387f883..8157b5d394a 100644
--- a/bindings/pydeck/pydeck/io/html.py
+++ b/bindings/pydeck/pydeck/io/html.py
@@ -21,7 +21,8 @@ def in_jupyter():
 
 
 def convert_js_bool(py_bool):
-    if type(py_bool) is bool:
+    """Serializes Python booleans to JavaScript. Returns non-boolean values unchanged."""
+    if type(py_bool) is not bool:
         return py_bool
     return "true" if py_bool else "false"
 
diff --git a/bindings/pydeck/requirements/requirements-dev.txt b/bindings/pydeck/requirements/requirements-dev.txt
index 91e316123b7..194e1abaf74 100644
--- a/bindings/pydeck/requirements/requirements-dev.txt
+++ b/bindings/pydeck/requirements/requirements-dev.txt
@@ -11,7 +11,7 @@ flake8
 requests
 sphinx
 recommonmark
-jupyterlab
+jupyterlab<4.0.0
 ipython>=5.8.0;python_version<"3.4"
 semver # necessary for PEP440-compliant semantic versions
 sphinx-markdown-builder
diff --git a/modules/carto/bundle.ts b/modules/carto/bundle.ts
index 6f649d0228b..76fdb2508b8 100644
--- a/modules/carto/bundle.ts
+++ b/modules/carto/bundle.ts
@@ -3,3 +3,7 @@ import * as CartoUtils from './src';
 export * from '../layers/bundle/peer-dependency';
 
 export const carto = CartoUtils;
+
+// Export carto layer library for pydeck integration
+// More info: https://github.com/ajduberstein/pydeck_custom_layer
+globalThis.CartoLayerLibrary = CartoUtils;