diff --git a/.readthedocs.yaml b/.readthedocs.yaml
index 5c93aa1..e749f07 100644
--- a/.readthedocs.yaml
+++ b/.readthedocs.yaml
@@ -8,6 +8,7 @@ build:
 python:
   install:
     - requirements: requirements.txt
+    - requirements: docs/requirements.txt
 
 # Build documentation in the "docs/" directory with Sphinx
 sphinx:
diff --git a/docs/conf.py b/docs/conf.py
index fe48713..d0b3174 100644
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -386,4 +386,4 @@
 
 
 # Example configuration for intersphinx: refer to the Python standard library.
-intersphinx_mapping = {'https://docs.python.org/': None, 'https://mt940.readthedocs.io/en/latest/': None, }
+intersphinx_mapping = {'python': ('https://docs.python.org/3', None), 'mt940': ('https://mt940.readthedocs.io/en/latest/', None)}
diff --git a/docs/requirements.txt b/docs/requirements.txt
new file mode 100644
index 0000000..8cb5c6e
--- /dev/null
+++ b/docs/requirements.txt
@@ -0,0 +1,2 @@
+sphinx
+sphinx-toolbox
\ No newline at end of file