diff --git a/dev_requirements.txt b/dev_requirements.txt
index 91317da..0261084 100644
--- a/dev_requirements.txt
+++ b/dev_requirements.txt
@@ -1,4 +1,4 @@
-black==24.3.0  # Both in dev_requirements.txt and test_requirements.txt
+black==26.3.1  # Both in dev_requirements.txt and test_requirements.txt
 coverage
 flake8
 jupyterlab
diff --git a/test_requirements.txt b/test_requirements.txt
index d3f2cac..05306a7 100644
--- a/test_requirements.txt
+++ b/test_requirements.txt
@@ -1,4 +1,4 @@
-black==24.3.0  # Both in dev_requirements.txt and test_requirements.txt
+black==26.3.1  # Both in dev_requirements.txt and test_requirements.txt
 coverage==4.4.1
 deepdiff==4.0.7
 nose==1.3.7