diff --git a/requirements.txt b/requirements.txt
index b5f06fe..cc58165 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -12,7 +12,7 @@ py==1.11.0
     # via dials-data (pyproject.toml)
 pyyaml==6.0.1
     # via dials-data (pyproject.toml)
-requests==2.31.0
+requests==2.33.0
     # via dials-data (pyproject.toml)
 urllib3==2.2.3
     # via requests
diff --git a/requirements_dev.txt b/requirements_dev.txt
index ff4db0a..349c7fb 100644
--- a/requirements_dev.txt
+++ b/requirements_dev.txt
@@ -22,7 +22,7 @@ pytest==7.4.2
     # via dials-data (pyproject.toml)
 pyyaml==6.0.1
     # via dials-data (pyproject.toml)
-requests==2.31.0
+requests==2.33.0
     # via dials-data (pyproject.toml)
 urllib3==2.2.3
     # via requests
diff --git a/requirements_doc.txt b/requirements_doc.txt
index 6908463..d03b9e0 100644
--- a/requirements_doc.txt
+++ b/requirements_doc.txt
@@ -30,7 +30,7 @@ pygments==2.18.0
     # via sphinx
 pyyaml==6.0.1
     # via dials-data (pyproject.toml)
-requests==2.32.3
+requests==2.33.0
     # via
     #   dials-data (pyproject.toml)
     #   sphinx