diff --git a/docs/admin/Installation.md b/docs/admin/Installation.md
index 99387ed6..7b67edd7 100644
--- a/docs/admin/Installation.md
+++ b/docs/admin/Installation.md
@@ -37,6 +37,7 @@ Furthermore the following Python libraries are required:
   * [Jinja2](https://palletsprojects.com/p/jinja/)
   * [PyICU](https://pypi.org/project/PyICU/)
   * [PyYaml](https://pyyaml.org/) (5.1+)
+  * [mwparserfromhell](https://github.com/earwig/mwparserfromhell/)
 
 These will be installed automatically when using pip installation.
 
diff --git a/docs/develop/Development-Environment.md b/docs/develop/Development-Environment.md
index 577ccbd0..29d376a7 100644
--- a/docs/develop/Development-Environment.md
+++ b/docs/develop/Development-Environment.md
@@ -73,7 +73,7 @@ virtualenv ~/nominatim-dev-venv
     types-jinja2 types-markupsafe types-psutil types-psycopg2 \
     types-pygments types-pyyaml types-requests types-ujson \
     types-urllib3 typing-extensions unicorn falcon starlette \
-    uvicorn mypy osmium aiosqlite
+    uvicorn mypy osmium aiosqlite mwparserfromhell
 ```
 
 Now enter the virtual environment whenever you want to develop: