diff --git a/poetry.lock b/poetry.lock
index 1c4d1cf..6971efc 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -3435,4 +3435,4 @@ files = [
 [metadata]
 lock-version = "2.0"
 python-versions = ">= 3.10"
-content-hash = "0d0b9dc9d8c2a197249e7b7ee4ececb6cb70a8778c9c86e3ad5b5e03e1ef72fa"
+content-hash = "3eb9ecad95b796b77285cdc76388cff0b26706280ba26fd565dc6191b4bae480"
diff --git a/pyproject.toml b/pyproject.toml
index 58d752a..3e807eb 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -24,6 +24,7 @@ matplotlib = ">= 3.5.3"
 ipython = ">= 8.14.0"
 furo = "^2024"
 pickleshare = "^0.7.5"
+pygments = "^2.7"
 
 [tool.poetry.group.dev.dependencies]
 pycodestyle = ">= 2.9.1"