diff --git a/requirements-dev.txt b/requirements-dev.txt
index 0cd4a6a6c..8316a4d46 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -17,7 +17,7 @@ pytest-mock==3.8.2
 pytest-random-order==1.0.4
 isort==5.10.1
 # For datetime mocking
-time-machine==2.7.1
+time-machine==2.8.1
 
 # Convert jupyter notebooks to markdown documents
 nbconvert==6.5.3