diff --git a/tests/requirements.colab.2024.02.txt b/tests/requirements.colab.2024.02.txt
index 4933e178..aeed228f 100644
--- a/tests/requirements.colab.2024.02.txt
+++ b/tests/requirements.colab.2024.02.txt
@@ -9,7 +9,7 @@
 
 Cython==3.2.5
 graphviz==0.21
-jupyter-client==8.8.0
+jupyter-client==8.9.1
 jupyter-console==6.6.3
 jupyter-server==2.19.0
 jupyter_core==5.9.1
diff --git a/tests/requirements.colab.2025.02.txt b/tests/requirements.colab.2025.02.txt
index de6609c3..3ad98ce5 100644
--- a/tests/requirements.colab.2025.02.txt
+++ b/tests/requirements.colab.2025.02.txt
@@ -11,7 +11,7 @@ Cython==3.2.5
 graphviz==0.21
 html5lib==1.1
 ipywidgets==8.1.8
-jupyter-client==8.8.0
+jupyter-client==8.9.1
 jupyter-console==6.6.3
 jupyter-server==2.19.0
 jupyter_core==5.9.1
diff --git a/tests/requirements.colab.2026.02.txt b/tests/requirements.colab.2026.02.txt
index ebfe0241..f2cc3989 100644
--- a/tests/requirements.colab.2026.02.txt
+++ b/tests/requirements.colab.2026.02.txt
@@ -11,7 +11,7 @@ Cython==3.2.5
 graphviz==0.21
 html5lib==1.1
 ipywidgets==8.1.8
-jupyter-client==8.8.0
+jupyter-client==8.9.1
 jupyter-console==6.6.3
 jupyter-server==2.19.0
 jupyter_core==5.9.1