diff --git a/poetry.lock b/poetry.lock
index 86ff01bd0aa..5cf128e73db 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -1,4 +1,4 @@
-# This file is automatically @generated by Poetry 1.9.0.dev0 and should not be changed by hand.
+# This file is automatically @generated by Poetry 1.8.2 and should not be changed by hand.
 
 [[package]]
 name = "build"
@@ -946,14 +946,18 @@ testing = ["pytest", "pytest-benchmark"]
 
 [[package]]
 name = "poetry-core"
-version = "1.9.0"
+version = "1.999.0.dev0"
 description = "Poetry PEP 517 Build Backend"
 optional = false
-python-versions = ">=3.8,<4.0"
-files = [
-    {file = "poetry_core-1.9.0-py3-none-any.whl", hash = "sha256:4e0c9c6ad8cf89956f03b308736d84ea6ddb44089d16f2adc94050108ec1f5a1"},
-    {file = "poetry_core-1.9.0.tar.gz", hash = "sha256:fa7a4001eae8aa572ee84f35feb510b321bd652e5cf9293249d62853e1f935a2"},
-]
+python-versions = "^3.8"
+files = []
+develop = false
+
+[package.source]
+type = "git"
+url = "https://github.com/radoering/poetry-core.git"
+reference = "pep621-support"
+resolved_reference = "2dd952dcf8562f2869ba5776351e7a6108f2a00e"
 
 [[package]]
 name = "poetry-plugin-export"
@@ -1595,4 +1599,4 @@ testing = ["big-O", "jaraco.functools", "jaraco.itertools", "more-itertools", "p
 [metadata]
 lock-version = "2.0"
 python-versions = "^3.8"
-content-hash = "f561c063b73aa744ed0b11d2e6e2b36dd5334e96607be8b3f2ebc895a5708870"
+content-hash = "9a374d1c0954458265975c035698e524401ed8ad1f6e50762b215ab547edbf87"
diff --git a/pyproject.toml b/pyproject.toml
index 07265de94eb..fa222a44b16 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -31,7 +31,7 @@ Changelog = "https://python-poetry.org/history/"
 [tool.poetry.dependencies]
 python = "^3.8"
 
-poetry-core = "1.9.0"
+poetry-core = { git = "https://github.com/radoering/poetry-core.git", branch = "pep621-support" }
 poetry-plugin-export = "^1.7.0"
 build = "^1.1.1"
 cachecontrol = { version = "^0.14.0", extras = ["filecache"] }