diff --git a/pyproject.toml b/pyproject.toml
index 6b5b28f..7e376de 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -21,7 +21,7 @@ snakemake-interface-common = "^1.14.0"
 snakemake-interface-storage-plugins = "^4.1.0"
 
 [tool.poetry.dev-dependencies]
-black = "^24.1.1"
+black = "^26.3.1"
 coverage = {extras = ["toml"], version = "^7.3.2"}
 flake8 = "^7.0.0"
 flake8-bugbear = "^22.1.11"