diff --git a/requirements.txt b/requirements.txt
index 5164bc2..fda075b 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,7 +1,8 @@
 # Requirements for code:
-folium
+folium<0.15.0
 gpxpy
 
 # Requirements for testing:
 pytest-flake8
+pytest<7.0
 flake8==3.9.2
diff --git a/todos.md b/todos.md
index 5df9ddb..1a67c6e 100644
--- a/todos.md
+++ b/todos.md
@@ -5,6 +5,9 @@
   * switch to better rendering (folium is slow)
   * skip build if no data is added
 * misc:
+  * unpin flake8
+  * unpin pytest
+  * unpin folium
   * make command line tool: `map-runs ./gps-folder -o output.html -v`. Allow `.ini` parameters as input
   * index in PyPI
   * organize versions