diff --git a/requirements.txt b/requirements.txt
index 5ed90a7..4370964 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -11,7 +11,7 @@ coverage==6.4.4
 git+https://github.com/DiamondLightSource/diffcalc-core.git#egg=diffcalc-core
 distlib==0.3.6
 docutils==0.19
-fastapi==0.79.0
+fastapi==0.81.0
 filelock==3.8.0
 flake8==5.0.4
 flake8-isort==4.2.0