diff --git a/requirements.txt b/requirements.txt
index 34a6e72..4bfc37f 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -31,7 +31,7 @@ babel==2.17.0
     #   nikola
 beautifulsoup4==4.13.4
     # via nbconvert
-bleach==6.2.0
+bleach[css]==6.2.0
     # via nbconvert
 blinker==1.9.0
     # via nikola
@@ -114,7 +114,7 @@ json5==0.12.0
     # via jupyterlab-server
 jsonpointer==3.0.0
     # via jsonschema
-jsonschema==4.24.0
+jsonschema[format-nongpl]==4.24.0
     # via
     #   jupyter-events
     #   jupyterlab-server
@@ -156,7 +156,7 @@ jupyterlab-server==2.27.3
     # via
     #   jupyterlab
     #   notebook
-lxml==5.4.0
+lxml==6.1.0
     # via nikola
 mako==1.3.10
     # via nikola
@@ -192,7 +192,7 @@ nbformat==5.10.4
     #   nbconvert
 nest-asyncio==1.6.0
     # via ipykernel
-nikola==8.3.3
+nikola[extras]==8.3.3
     # via -r requirements.in
 notebook==7.4.3
     # via nikola
@@ -292,14 +292,8 @@ rpds-py==0.25.1
     #   referencing
 ruamel-yaml==0.18.11
     # via nikola
-ruamel-yaml-clib==0.2.12
-    # via ruamel-yaml
 send2trash==1.8.3
     # via jupyter-server
-setuptools==80.9.0
-    # via
-    #   jupyterlab
-    #   nikola
 six==1.17.0
     # via
     #   html5lib
@@ -346,10 +340,7 @@ traitlets==5.14.3
 types-python-dateutil==2.9.0.20250516
     # via arrow
 typing-extensions==4.13.2
-    # via
-    #   anyio
-    #   beautifulsoup4
-    #   referencing
+    # via beautifulsoup4
 typogrify==2.1.0
     # via nikola
 unidecode==1.4.0