diff --git a/README.md b/README.md
index 675ae65943..fc520a0cff 100644
--- a/README.md
+++ b/README.md
@@ -16,7 +16,7 @@
 About
 -----
 
-- **Important**: This is Lean 3.16.5c, a fork of Lean 3 maintained and updated by the Lean community. The last official release of Lean 3.x was Lean 3.4.2, which can be found [here](https://github.com/leanprover/lean). The Lean developers are currently developing [Lean 4](https://github.com/leanprover/lean4).
+- **Important**: This is Lean 3.17.0c, a fork of Lean 3 maintained and updated by the Lean community. The last official release of Lean 3.x was Lean 3.4.2, which can be found [here](https://github.com/leanprover/lean). The Lean developers are currently developing [Lean 4](https://github.com/leanprover/lean4).
 - [Lean Homepage](http://leanprover.github.io)
 - [Lean Prover Community Homepage](https://leanprover-community.github.io)
 - [Theorem Proving in Lean](https://leanprover.github.io/theorem_proving_in_lean/index.html)
diff --git a/doc/changes.md b/doc/changes.md
index 9fd4374df3..8fb6f38de2 100644
--- a/doc/changes.md
+++ b/doc/changes.md
@@ -1,3 +1,26 @@
+3.17.0c (6 July 2020)
+---------------------
+
+Features:
+- Refactor widgets to use hooks (#363, #369)
+- `component.with_effects` (#370)
+- Add "copy text" effect. (#375)
+
+Bug fixes:
+- Add margin to local const names in tactic state (#365)
+- Prevent segfault in `apply` (#373, fixes #372)
+- Fix address incorrect issue in `pp_tagged` (#371)
+- Abort if no input consumed in `module_parser` (#377, fixes #374)
+- Do not unify `(1 : ℕ)` with `(1 : ℤ)` (#376, fixes #362)
+
+Changes:
+- Fix vacuous assumptions in nat lemmas (#366)
+- Remove `has_neg` instance for `set` (#367)
+- Mark `dif_ctx_congr` as `@[congr]` (#378)
+
+Server protocol changes:
+- The response of the `widget_event` request may now contain effects.
+
 3.16.5c (25 June 2020)
 ----------------------
 
diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index e6864b4175..8550ceb479 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -4,8 +4,8 @@ if ((${CMAKE_MAJOR_VERSION}.${CMAKE_MINOR_VERSION} GREATER 3.1) OR (${CMAKE_MAJO
 endif()
 project(LEAN CXX C)
 set(LEAN_VERSION_MAJOR 3)
-set(LEAN_VERSION_MINOR 16)
-set(LEAN_VERSION_PATCH 5)
+set(LEAN_VERSION_MINOR 17)
+set(LEAN_VERSION_PATCH 0)
 set(LEAN_VERSION_IS_RELEASE 1)  # This number is 1 in the release revision, and 0 otherwise.
 set(LEAN_SPECIAL_VERSION_DESC "" CACHE STRING "Additional version description like 'nightly-2018-03-11'")
 set(LEAN_VERSION_STRING "${LEAN_VERSION_MAJOR}.${LEAN_VERSION_MINOR}.${LEAN_VERSION_PATCH}")