diff --git a/.readthedocs.yaml b/.readthedocs.yaml
index 80cdccf5..3a7ccf66 100644
--- a/.readthedocs.yaml
+++ b/.readthedocs.yaml
@@ -17,12 +17,11 @@ sphinx:
 
 # If using Sphinx, optionally build your docs in additional formats such as PDF
 formats:
-   - pdf
+  - htmlzip
 
 # Optionally declare the Python requirements required to build your docs
 python:
   install:
     - requirements: docs/requirements.txt
     - method: pip
-      path: .
-  system_packages: true
\ No newline at end of file
+      path: .
\ No newline at end of file
diff --git a/docs/conf.py b/docs/conf.py
index 23448ad9..81059807 100644
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -53,6 +53,27 @@
     'sphinx.ext.todo',
     'sphinx.ext.viewcode',  # Add a link to the Python source code for classes, functions etc.
     'nbsphinx',
+    'sphinx_search.extension', # search across multiple docsets in domain
+    'sphinx.ext.viewcode', # link to view source code
+    'myst_parser', # source files written in MD or RST
+]
+
+myst_enable_extensions = [
+    "amsmath",
+    "attrs_inline",
+    "colon_fence",
+    "deflist",
+    "dollarmath",
+    "fieldlist",
+    "html_admonition",
+    "html_image",
+    "inv_link",
+    "linkify",
+    "replacements",
+    "smartquotes",
+    "strikethrough",
+    "substitution",
+    "tasklist",
 ]
 
 autodoc_default_options = {
@@ -78,7 +99,7 @@
 
 # The suffix(es) of source filenames.
 # You can specify multiple suffix as a list of string:
-source_suffix = '.rst'
+source_suffix = ['.rst', '.md']
 master_doc = 'index'
 
 # General information about the project.
@@ -98,7 +119,7 @@
 # List of patterns, relative to source directory, that match files and
 # directories to ignore when looking for source files.
 # This patterns also effect to html_static_path and html_extra_path
-exclude_patterns = ['_build', 'Thumbs.db', '.DS_Store']
+exclude_patterns = ['_build', 'Thumbs.db', '.DS_Store', 'README.md']
 
 # suppress warnings for multiple possible Python references in the namespace
 # suppress_warnings = ['ref.python']
@@ -128,8 +149,11 @@
 # Add any paths that contain custom static files (such as style sheets) here,
 # relative to this directory. They are copied after the builtin static files,
 # so a file named "default.css" will overwrite the builtin "default.css".
+
 html_static_path = ['_static']
 
+html_css_files = ['theme_overrides.css']
+
 html_context = {
     'rtd_url': 'https://docs.idmod.org/projects/covasim/en/latest',
     'theme_vcs_pageview_mode': 'edit'
@@ -156,6 +180,22 @@
 # base URL from which the finished HTML is served.
 html_use_opensearch = 'docs.idmod.org/projects/covasim/en/latest'
 
+
+# -- RTD Sphinx search for searching across the entire domain, default child -------------
+
+if os.environ.get('READTHEDOCS') == 'True':
+
+    search_project_parent = "institute-for-disease-modeling-idm"
+    search_project = os.environ["READTHEDOCS_PROJECT"]
+    search_version = os.environ["READTHEDOCS_VERSION"]
+
+    rtd_sphinx_search_default_filter = f"subprojects:{search_project}/{search_version}"
+
+    rtd_sphinx_search_filters = {
+        "Search this project": f"project:{search_project}/{search_version}",
+        "Search all IDM docs": f"subprojects:{search_project_parent}/{search_version}",
+    }
+
 # Output file base name for HTML help builder.
 htmlhelp_basename = 'Covasim'
 
diff --git a/docs/requirements.txt b/docs/requirements.txt
index 32f9fe40..3025a044 100644
--- a/docs/requirements.txt
+++ b/docs/requirements.txt
@@ -8,4 +8,7 @@ nbsphinx
 pandoc
 pypandoc
 optuna
-seaborn
\ No newline at end of file
+seaborn
+myst-parser
+readthedocs-sphinx-search
+jupyterlab
\ No newline at end of file