diff --git a/.gitignore b/.gitignore
index 6bff14a84..723a4db8c 100644
--- a/.gitignore
+++ b/.gitignore
@@ -50,8 +50,7 @@ docs/generated/
 docs/generated/**/*
 docs/**/*.DS_Store
 docs/**/*.swp
-
-
+!fortran_doc.md
 !README_figs/*
 
 #Docker and Singularity files
diff --git a/.readthedocs.yaml b/.readthedocs.yaml
index 9c1872b1a..e8700e6e4 100644
--- a/.readthedocs.yaml
+++ b/.readthedocs.yaml
@@ -15,12 +15,8 @@ build:
   os: ubuntu-22.04
   tools:
     python: "3.11"
-
-# Optionally build your docs in additional formats such as PDF and ePub
-# formats:
-#   - pdf
-#   - epub
-
+  pre_build:
+    - ford fortran_doc.md -o ../_readthedocs/html/fortran/
 python:
   install:
     - requirements: docs/requirements.txt
diff --git a/fortran_doc.md b/fortran_doc.md
new file mode 100644
index 000000000..906bffbda
--- /dev/null
+++ b/fortran_doc.md
@@ -0,0 +1,27 @@
+---
+project: Swiftest
+author: David A. Minton
+summary: High performance Fortran functions used by the swiftest project via ISO_C_BINDING interfaces and Cython.
+favicon: ./docs/_static/logos/swiftest_logo.svg
+project_github: https://github.com/profminton/swiftest
+project_download: https://github.com/profminton/swiftest/releases
+project_website: https://swiftest.readthedocs.io
+author: David A. Minton
+github: https://github.com/profminton/
+src_dir: src
+output_dir: ./docs/_build/html/fortran
+media_dir: ./docs/_static
+source: true
+graph: true
+sort: alpha
+print_creation_date: true
+extra_mods: iso_c_binding:https://gcc.gnu.org/onlinedocs/gfortran/ISO_005fC_005fBINDING.html
+            ieee_arithmetic:https://gcc.gnu.org/onlinedocs/gfortran/IEEE-modules.html
+            ieee_exceptions:https://gcc.gnu.org/onlinedocs/gfortran/IEEE-modules.html
+            iso_fortran_env:https://gcc.gnu.org/onlinedocs/gfortran/ISO_005fFORTRAN_005fENV.html
+creation_date: %Y-%m-%d %H:%M %z
+md_extensions: markdown.extensions.toc
+               markdown.extensions.smarty
+---
+
+This is the documentation for the Fortran components of Swiftest
diff --git a/pyproject.toml b/pyproject.toml
index 4460d80d3..1961a87d2 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -36,7 +36,7 @@ dependencies = [
     'matplotlib>=3.7',
     'astropy>=5.2',
     'astroquery>=0.4.6',
-    'tqdm>=4.66',
+    'tqdm>=4.64.1',
     'cython>=3.0.0'
 ]
 
@@ -58,7 +58,8 @@ requires = [
     "sphinx-inline-tabs",
     "sphinxext-rediraffe",
     "sphinxext-opengraph",
-    "nbsphinx"
+    "nbsphinx",
+    "ford"
 ]
 build-backend = "scikit_build_core.build"