diff --git a/CHANGELOG.md b/CHANGELOG.md
index c521f821e..1ea43d548 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,18 @@
+# 0.3.3 - 2020-03-05
+
+## Added
+ - `ByteSpanPositionProvider` provides start offset and length of CSTNode as metadata. 
+ - `get_docstring` helper provides docstring from `Module`, `ClassDef` and `FunctionDef` node types.
+
+## Updated
+ - Optimized `ScopeProvider` performance to run faster and use less memory:
+   - remove unnecessary `Assignment` of keyword `Arg`.
+   - don't provide scope object for formatting information nodes.
+   - batch set union updates in `infer_accesses` step.
+
+## Fixed
+ - Fixed `_assignments` mutation when calling read-only `Scope.get_qualified_names_for` and `__contains__`.
+
 # 0.3.2 - 2020-02-24
 
 ## Added
diff --git a/libcst/_version.py b/libcst/_version.py
index 98a2371d9..6b015bca6 100644
--- a/libcst/_version.py
+++ b/libcst/_version.py
@@ -4,4 +4,4 @@
 # LICENSE file in the root directory of this source tree.
 
 
-LIBCST_VERSION: str = "0.3.2"
+LIBCST_VERSION: str = "0.3.3"