diff --git a/.gitignore b/.gitignore
index 1b7f964..46ba0f5 100644
--- a/.gitignore
+++ b/.gitignore
@@ -109,3 +109,4 @@ lcov.info
 
 .vim
 .vscode
+uv.lock
diff --git a/.readthedocs.yaml b/.readthedocs.yaml
index 37ce7be..d8de059 100644
--- a/.readthedocs.yaml
+++ b/.readthedocs.yaml
@@ -7,9 +7,19 @@ version: 2
 
 # Set the version of Python and other tools you might need
 build:
-  os: ubuntu-20.04
+  os: ubuntu-lts-latest
   tools:
-    python: "3.10"
+    python: "3.13"
+  jobs:
+    pre_install:
+      - pip install --upgrade pip
+      - pip install --upgrade --upgrade-strategy only-if-needed --group doc .
+    # build:
+    #   html:
+    #   - python -m sphinx -T -b html -d _build/doctrees -D language=en . $READTHEDOCS_OUTPUT/html
+    post_build:
+      - echo "Command run at 'post_build' step"
+      - echo `date`
 
 
 # Build documentation in the docs/ directory with Sphinx
@@ -24,9 +34,11 @@ formats:
 # extra.
 
 #Optionally declare the Python requirements required to build your docs
+
 python:
   install:
     - method: pip
       path: .
       extra_requirements:
         - doc
+
diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index dafc1c3..cfe68bd 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -1,4 +1,6 @@
-# Contributing to ptulsconv
+# Contributing
+
+Contributions to `ptulsconv` are welcome!
 
 ## Testing
 
@@ -7,3 +9,35 @@ Before submitting PRs or patches, please make sure your branch passes all of the
 ```sh
 ~/ptulsconv$ pytest
 ```
+
+## Regarding use of Agents
+
+`ptulsconv` is an open-source project that is offered free for no commerical gain, and 
+is developed and maintained for educational and creative reasons.
+
+If you use an agent or LLM to produce code for it you are missing out on the benefits 
+of contributing to an open-source project, particularly community, collaboration with 
+other developers and designers, and being able to learn and experiment without the 
+burden of deadlines or worrying about business cases or profits.
+
+This project is supposed to be fun, do not let machines have fun for you.
+
+We can't prevent you from using LLMs to contribute to this project but we ask you 
+abide by the following eitiquette when doing so:
+
+* All communication with the maintainers must be written by a human in their own
+  voice. Never use an LLM to craft thread comments, discussion posts, issues, emails
+  or other correspondence with other developers or the maintainers. 
+* PRs must be submitted by a person. Do not allow an agent to submit its own PRs to
+  this project.
+* Especially if you are a new contributor to this project, please submit only one PR
+  at a time and please restrict the subject matter of the PR to a specific unit,
+  module or tool. All submissions have to be reviewed and understood by the
+  maintainers before they can be merged.
+
+Obviously we can't verify if you follow all of these rules but certain telltale 
+traits of LLM-predicted text or code will raise a flag: lack of brevity in 
+descriptions or code comments, large amounts of text describing your process or 
+steps that add little to understanding the changes you've made, use of an 
+obsequious tone or being excessively accomodating, immediately doing requests 
+without further discussion or clarifications.
diff --git a/src/ptulsconv/docparser/__init__.py b/src/ptulsconv/docparser/__init__.py
index c8e418b..840e568 100644
--- a/src/ptulsconv/docparser/__init__.py
+++ b/src/ptulsconv/docparser/__init__.py
@@ -2,6 +2,7 @@
 Docparser module
 """
 
+
 from .pt_doc_parser import parse_document
 
 __all__ = [parse_document]
diff --git a/src/ptulsconv/pdf/__init__.py b/src/ptulsconv/pdf/__init__.py
index df9bb92..ca53979 100644
--- a/src/ptulsconv/pdf/__init__.py
+++ b/src/ptulsconv/pdf/__init__.py
@@ -97,6 +97,7 @@ def make_doc_template(
             doc_title=document_header,
         )
 
+
     frames = [Frame(page_box.min_x, page_box.min_y, page_box.width, page_box.height)]
 
     page_template = PageTemplate(id="Main", frames=frames, onPage=on_page_lambda)