diff --git a/CHANGES.rst b/CHANGES.rst
index 5a65bf36..0207b1f4 100644
--- a/CHANGES.rst
+++ b/CHANGES.rst
@@ -5,7 +5,7 @@ Unreleased
 
 -   Drop support for Python 3.8. :pr:`5623`
 -   Update minimum dependency versions to latest feature releases.
-    Werkzeug >= 3.1, ItsDangerous >= 2.2, Blinker >= 1.8. :pr:`5624`
+    Werkzeug >= 3.1, ItsDangerous >= 2.2, Blinker >= 1.9. :pr:`5624,5633`
 -   Provide a configuration option to control automatic option
     responses. :pr:`5496`
 -   ``Flask.open_resource``/``open_instance_resource`` and
diff --git a/pyproject.toml b/pyproject.toml
index 80c88242..954ac18b 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -25,7 +25,7 @@ dependencies = [
     "Jinja2>=3.1.2",
     "itsdangerous>=2.2",
     "click>=8.1.3",
-    "blinker>=1.8",
+    "blinker>=1.9",
     "importlib-metadata>=3.6; python_version < '3.10'",
 ]
 
diff --git a/requirements/tests-min.in b/requirements/tests-min.in
index cab4789b..e0c2fedd 100644
--- a/requirements/tests-min.in
+++ b/requirements/tests-min.in
@@ -3,4 +3,4 @@ jinja2==3.1.2
 markupsafe==2.1.1
 itsdangerous==2.2.0
 click==8.1.3
-blinker==1.8.0
+blinker==1.9.0
diff --git a/requirements/tests-min.txt b/requirements/tests-min.txt
index 005de8b5..47857609 100644
--- a/requirements/tests-min.txt
+++ b/requirements/tests-min.txt
@@ -4,7 +4,7 @@
 #
 #    pip-compile tests-min.in
 #
-blinker==1.8.0
+blinker==1.9.0
     # via -r tests-min.in
 click==8.1.3
     # via -r tests-min.in