diff --git a/poetry.lock b/poetry.lock
index 5b813e0..1d5659e 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -867,7 +867,7 @@ testing = ["filelock"]
 
 [[package]]
 name = "python-dotenv"
-version = "0.19.2"
+version = "0.20.0"
 description = "Read key-value pairs from a .env file and set them as environment variables"
 category = "main"
 optional = false
@@ -1227,7 +1227,7 @@ testing = ["pytest (>=4.6)", "pytest-checkdocs (>=2.4)", "pytest-flake8", "pytes
 [metadata]
 lock-version = "1.1"
 python-versions = "^3.7"
-content-hash = "f3812a8ecac80cb76476df78aaf9383c8eac3ef0d1c4cbc4d8726b467c0cdaf4"
+content-hash = "2c4fd31c67aaa3718c0ee65d8de0e990b650060415d9e0bcd81d8a3d1797059f"
 
 [metadata.files]
 aioredis = [
@@ -1756,8 +1756,8 @@ pytest-xdist = [
     {file = "pytest_xdist-2.5.0-py3-none-any.whl", hash = "sha256:6fe5c74fec98906deb8f2d2b616b5c782022744978e7bd4695d39c8f42d0ce65"},
 ]
 python-dotenv = [
-    {file = "python-dotenv-0.19.2.tar.gz", hash = "sha256:a5de49a31e953b45ff2d2fd434bbc2670e8db5273606c1e737cc6b93eff3655f"},
-    {file = "python_dotenv-0.19.2-py2.py3-none-any.whl", hash = "sha256:32b2bdc1873fd3a3c346da1c6db83d0053c3c62f28f1f38516070c4c8971b1d3"},
+    {file = "python-dotenv-0.20.0.tar.gz", hash = "sha256:b7e3b04a59693c42c36f9ab1cc2acc46fa5df8c78e178fc33a8d4cd05c8d498f"},
+    {file = "python_dotenv-0.20.0-py3-none-any.whl", hash = "sha256:d92a187be61fe482e4fd675b6d52200e7be63a12b724abbf931a40ce4fa92938"},
 ]
 python-ulid = [
     {file = "python-ulid-1.1.0.tar.gz", hash = "sha256:5fb5e4a91db8ca93e8938a613360b3def299b60d41f847279a8c39c9b2e9c65e"},
diff --git a/pyproject.toml b/pyproject.toml
index 117a735..42870c3 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -32,7 +32,7 @@ pptree = "^3.1"
 types-redis = ">=3.5.9,<5.0.0"
 types-six = "^1.16.1"
 python-ulid = "^1.0.3"
-python-dotenv = "^0.19.1"
+python-dotenv = ">=0.19.1,<0.21.0"
 cleo = "1.0.0a4"
 typing-extensions = "^4.0.0"
 hiredis = "^2.0.0"