diff --git a/mknodes/__init__.py b/mknodes/__init__.py
index f7009455..7082612e 100644
--- a/mknodes/__init__.py
+++ b/mknodes/__init__.py
@@ -157,4 +157,4 @@
     "MkPipDepTree",
 ]
 
-__version__ = "0.40.0"
+__version__ = "0.41.0"
diff --git a/mknodes/basenodes/mkannotations.py b/mknodes/basenodes/mkannotations.py
index b9552ae6..c7300662 100644
--- a/mknodes/basenodes/mkannotations.py
+++ b/mknodes/basenodes/mkannotations.py
@@ -14,7 +14,6 @@ class MkAnnotation(mkcontainer.MkContainer):
     """Represents a single annotation. It gets managed by an MkAnnotations node."""
 
     REQUIRED_EXTENSIONS = [
-        requirements.Extension("attr_list"),
         requirements.Extension("md_in_html"),
         requirements.Extension("pymdownx.superfences"),
     ]
@@ -52,7 +51,6 @@ class MkAnnotations(mkcontainer.MkContainer):
 
     items: list[MkAnnotation]
     REQUIRED_EXTENSIONS = [
-        requirements.Extension("attr_list"),
         requirements.Extension("md_in_html"),
         requirements.Extension("pymdownx.superfences"),
     ]
diff --git a/mknodes/basenodes/mkclickdoc.py b/mknodes/basenodes/mkclickdoc.py
index a41391c0..79a38eac 100644
--- a/mknodes/basenodes/mkclickdoc.py
+++ b/mknodes/basenodes/mkclickdoc.py
@@ -3,7 +3,7 @@
 from typing import Any
 
 from mknodes.basenodes import mknode
-from mknodes.utils import clihelpers, log, reprhelpers, requirements
+from mknodes.utils import clihelpers, log, reprhelpers
 
 
 logger = log.get_logger(__name__)
@@ -12,7 +12,6 @@
 class MkClickDoc(mknode.MkNode):
     """Documentation for click / typer CLI apps."""
 
-    REQUIRED_EXTENSIONS = [requirements.Extension("attr_list")]
     ICON = "material/api"
 
     def __init__(
diff --git a/mknodes/basenodes/mkgrid.py b/mknodes/basenodes/mkgrid.py
index b644d734..864b2f21 100644
--- a/mknodes/basenodes/mkgrid.py
+++ b/mknodes/basenodes/mkgrid.py
@@ -12,10 +12,7 @@ class MkGridCard(mkcontainer.MkContainer):
 
     ICON = "material/square-medium"
     STATUS = "new"
-    REQUIRED_EXTENSIONS = [
-        requirements.Extension("attr_list"),
-        requirements.Extension("md_in_html"),
-    ]
+    REQUIRED_EXTENSIONS = [requirements.Extension("md_in_html")]
 
     def __init__(
         self,
@@ -36,10 +33,7 @@ class MkGrid(mkcontainer.MkContainer):
     """Node for showing a grid."""
 
     ICON = "material/view-grid"
-    REQUIRED_EXTENSIONS = [
-        requirements.Extension("attr_list"),
-        requirements.Extension("md_in_html"),
-    ]
+    REQUIRED_EXTENSIONS = [requirements.Extension("md_in_html")]
     items: list[MkGridCard]
 
     def __init__(
diff --git a/mknodes/basenodes/mkimage.py b/mknodes/basenodes/mkimage.py
index 3e94e7fe..dee97ed8 100644
--- a/mknodes/basenodes/mkimage.py
+++ b/mknodes/basenodes/mkimage.py
@@ -19,10 +19,7 @@ class MkImage(mknode.MkNode):
     """Image including optional caption."""
 
     ICON = "material/image"
-    REQUIRED_EXTENSIONS = [
-        requirements.Extension("attr_list"),
-        requirements.Extension("md_in_html"),
-    ]
+    REQUIRED_EXTENSIONS = [requirements.Extension("md_in_html")]
 
     def __init__(
         self,
diff --git a/mknodes/basenodes/mkimagecompare.py b/mknodes/basenodes/mkimagecompare.py
index 22c2e468..79ccf608 100644
--- a/mknodes/basenodes/mkimagecompare.py
+++ b/mknodes/basenodes/mkimagecompare.py
@@ -22,10 +22,6 @@ class MkImageCompare(mknode.MkNode):
     """Node to show an Image comparison (using a slider)."""
 
     ICON = "material/image-off"
-    REQUIRED_EXTENSIONS = [
-        requirements.Extension("attr_list"),
-        requirements.Extension("md_in_html"),
-    ]
     JS_FILES = [requirements.JSLink(JS_URL, defer=True)]
     CSS = [requirements.CSSLink(CSS_URL)]
 
diff --git a/mknodes/basenodes/mkimageslideshow.py b/mknodes/basenodes/mkimageslideshow.py
index 1b7f27c9..b09105cb 100644
--- a/mknodes/basenodes/mkimageslideshow.py
+++ b/mknodes/basenodes/mkimageslideshow.py
@@ -25,10 +25,6 @@ class MkImageSlideshow(mknode.MkNode):
     """Node to show an Image comparison (using a slider)."""
 
     ICON = "material/image-multiple"
-    REQUIRED_EXTENSIONS = [
-        requirements.Extension("attr_list"),
-        requirements.Extension("md_in_html"),
-    ]
     JS_FILES = [requirements.JSLink(JS_URL)]
 
     def __init__(
diff --git a/mknodes/basenodes/mklink.py b/mknodes/basenodes/mklink.py
index b4297c55..3f7b0faf 100644
--- a/mknodes/basenodes/mklink.py
+++ b/mknodes/basenodes/mklink.py
@@ -5,7 +5,7 @@
 from typing import TYPE_CHECKING, Any
 
 from mknodes.basenodes import mknode
-from mknodes.utils import log, reprhelpers, requirements
+from mknodes.utils import log, reprhelpers
 
 
 if TYPE_CHECKING:
@@ -22,7 +22,6 @@ class MkLink(mknode.MkNode):
     """
 
     ICON = "octicons/link-24"
-    REQUIRED_EXTENSIONS = [requirements.Extension("attr_list")]  # for buttons
 
     def __init__(
         self,
diff --git a/mknodes/basenodes/mknode.py b/mknodes/basenodes/mknode.py
index b3593862..cb73f8a6 100644
--- a/mknodes/basenodes/mknode.py
+++ b/mknodes/basenodes/mknode.py
@@ -285,6 +285,8 @@ def get_requirements(self) -> requirements.Requirements:
         logger.debug("Collecting requirements from tree...")
         nodes = [*list(self.descendants), self]
         extensions: dict[str, dict] = {
+            "attr_list": {},
+            "md_in_html": {},
             "pymdownx.emoji": {},
             "pymdownx.magiclink": dict(
                 repo_url_shorthand=True,
@@ -341,7 +343,7 @@ def to_html(self) -> str:
         md = self.to_markdown()
         reqs = self.get_requirements()
         configs = reqs.markdown_extensions
-        exts = [*list(configs.keys()), "attr_list", "md_in_html"]
+        exts = list(configs.keys())
         return markdown.Markdown(extensions=exts, extension_configs=configs).convert(md)
 
 
diff --git a/mknodes/basenodes/mktimeline.py b/mknodes/basenodes/mktimeline.py
index 9acd3471..3abb0064 100644
--- a/mknodes/basenodes/mktimeline.py
+++ b/mknodes/basenodes/mktimeline.py
@@ -86,10 +86,7 @@ class MkTimeline(mkcontainer.MkContainer):
     """Node to show an Image comparison (using a slider)."""
 
     ICON = "material/timeline"
-    REQUIRED_EXTENSIONS = [
-        requirements.Extension("attr_list"),
-        requirements.Extension("md_in_html"),
-    ]
+    REQUIRED_EXTENSIONS = [requirements.Extension("md_in_html")]
     JS_FILES = [
         requirements.JSLink(JQUERY_LINK),
         requirements.JSLink(SCROLLREVEAL_LINK),