diff --git a/CHANGELOG.md b/CHANGELOG.md
index 0056c56d9..9214d9d73 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,30 @@
 # Change Log
 
+## [1.1.0a1] - 2021-03-30
+
+This version is the first to drop support for Python 2.7 and 3.5.
+
+If you are still using these versions you should update the `requires` property of the `build-system` section
+to restrict the version of `poetry-core`:
+
+```toml
+[build-system]
+requires = ["poetry-core<1.1.0"]
+build-backend = "poetry.core.masonry.api"
+```
+
+### Changed
+
+- Dropped support for Python 2.7 and 3.5 ([#131](https://github.com/python-poetry/poetry-core/pull/131)).
+- Reorganized imports internally to improve performances ([#131](https://github.com/python-poetry/poetry-core/pull/131)).
+- Directory dependencies are now in non-develop mode by default ([#98](https://github.com/python-poetry/poetry-core/pull/98)).
+- Improved support for PEP 440 specific versions that do not abide by semantic versioning ([#140](https://github.com/python-poetry/poetry-core/pull/140)).
+
+### Fixed
+
+- Fixed path dependencies PEP 508 representation ([#141](https://github.com/python-poetry/poetry-core/pull/141)).
+
+
 ## [1.0.2] - 2021-02-05
 
 ### Fixed
@@ -139,7 +164,8 @@ No changes.
 - Fixed support for stub-only packages ([#28](https://github.com/python-poetry/core/pull/28)).
 
 
-[Unreleased]: https://github.com/python-poetry/poetry-core/compare/1.0.2...master
+[Unreleased]: https://github.com/python-poetry/poetry-core/compare/1.1.0a1...master
+[1.1.0a1]: https://github.com/python-poetry/poetry-core/releases/tag/1.1.0a1
 [1.0.2]: https://github.com/python-poetry/poetry-core/releases/tag/1.0.2
 [1.0.1]: https://github.com/python-poetry/poetry-core/releases/tag/1.0.1
 [1.0.0]: https://github.com/python-poetry/poetry-core/releases/tag/1.0.0
diff --git a/poetry.lock b/poetry.lock
index f5970c175..e262d6acb 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -128,7 +128,7 @@ python-versions = "*"
 
 [[package]]
 name = "identify"
-version = "2.2.1"
+version = "2.2.2"
 description = "File identification library for Python"
 category = "dev"
 optional = false
@@ -633,8 +633,8 @@ filelock = [
     {file = "filelock-3.0.12.tar.gz", hash = "sha256:18d82244ee114f543149c66a6e0c14e9c4f8a1044b5cdaadd0f82159d6a6ff59"},
 ]
 identify = [
-    {file = "identify-2.2.1-py2.py3-none-any.whl", hash = "sha256:9cc5f58996cd359b7b72f0a5917d8639de5323917e6952a3bfbf36301b576f40"},
-    {file = "identify-2.2.1.tar.gz", hash = "sha256:1cfb05b578de996677836d5a2dde14b3dffde313cf7d2b3e793a0787a36e26dd"},
+    {file = "identify-2.2.2-py2.py3-none-any.whl", hash = "sha256:c7c0f590526008911ccc5ceee6ed7b085cbc92f7b6591d0ee5913a130ad64034"},
+    {file = "identify-2.2.2.tar.gz", hash = "sha256:43cb1965e84cdd247e875dec6d13332ef5be355ddc16776396d98089b9053d87"},
 ]
 idna = [
     {file = "idna-2.10-py2.py3-none-any.whl", hash = "sha256:b97d804b1e9b523befed77c48dacec60e6dcb0b5391d57af6a65a312a90648c0"},
diff --git a/poetry/core/__init__.py b/poetry/core/__init__.py
index faa2c8436..8b1e52693 100644
--- a/poetry/core/__init__.py
+++ b/poetry/core/__init__.py
@@ -3,7 +3,7 @@
 from pathlib import Path
 
 
-__version__ = "1.1.0a0"
+__version__ = "1.1.0a1"
 
 __vendor_site__ = (Path(__file__).parent / "_vendor").as_posix()
 
diff --git a/pyproject.toml b/pyproject.toml
index 8095d9d97..d93419a65 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "poetry-core"
-version = "1.1.0a0"
+version = "1.1.0a1"
 description = "Poetry PEP 517 Build Backend"
 authors = ["Sébastien Eustace <sebastien@eustace.io>"]