diff --git a/poetry.lock b/poetry.lock
index 8801d2d..856e1c4 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -327,7 +327,7 @@ python-versions = ">=3.5"
 name = "pyyaml"
 version = "5.4.1"
 description = "YAML parser and emitter for Python"
-category = "dev"
+category = "main"
 optional = false
 python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*, !=3.5.*"
 
@@ -445,7 +445,7 @@ python-versions = "*"
 [metadata]
 lock-version = "1.1"
 python-versions = "^3.9.4"
-content-hash = "048b904865b7fadd35fc1575694ec1c21c3c80ba6439915fbbb2f7aca5745d5c"
+content-hash = "f156c48aa87b1786e666d4664775fe9f6f7693f767ac80244c4cdc1a1a8b691d"
 
 [metadata.files]
 appdirs = [
diff --git a/pyproject.toml b/pyproject.toml
index bb47d98..ac2a986 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -29,6 +29,7 @@ prompt-toolkit = "^3.0.18"
 requests = "^2.25.1"
 pygments = "^2.8.1"
 more-itertools = "^8.7.0"
+PyYAML = "^5.4.1"
 
 [tool.poetry.dev-dependencies]
 flake8 = "^3.8"