diff --git a/.appveyor.yml b/.appveyor.yml
index 8841ce6c5..a4e66547b 100644
--- a/.appveyor.yml
+++ b/.appveyor.yml
@@ -1,4 +1,4 @@
-version: 0.12.0.{build}
+version: 0.12.1.{build}
 
 init:
   - cmd: git config --global core.autocrlf true
diff --git a/help/release/0.12.1.rst b/help/release/0.12.1.rst
index 3b4f0b87c..08fe64fc7 100644
--- a/help/release/0.12.1.rst
+++ b/help/release/0.12.1.rst
@@ -1,4 +1,4 @@
-YCM 0.12.1 (UNRELEASED) Release Notes
+YCM 0.12.1 (2021-01-15) Release Notes
 *************************************
 
 .. only:: html
diff --git a/help/release/index.rst b/help/release/index.rst
index 83224ab9c..e04a80231 100644
--- a/help/release/index.rst
+++ b/help/release/index.rst
@@ -11,7 +11,7 @@ YCM 0.12 Series
 .. toctree::
    :maxdepth: 1
 
-   YCM 0.12.1 (UNRELEASED) <0.12.1>
+   YCM 0.12.1 (2021-01-15) <0.12.1>
    YCM 0.12.0 (2020-09-28) <0.12.0>
 
 YCM 0.11 Series
diff --git a/internal-modules/YCMVersion.cmake b/internal-modules/YCMVersion.cmake
index 3ed887859..2f0a431ed 100644
--- a/internal-modules/YCMVersion.cmake
+++ b/internal-modules/YCMVersion.cmake
@@ -41,7 +41,7 @@ include(GitInfo)
 
 set(YCM_VERSION_MAJOR 0)
 set(YCM_VERSION_MINOR 12)
-set(YCM_VERSION_PATCH 0)
+set(YCM_VERSION_PATCH 1)
 
 set(YCM_VERSION_API "${YCM_VERSION_MAJOR}.${YCM_VERSION_MINOR}")
 set(YCM_VERSION_SHORT "${YCM_VERSION_MAJOR}.${YCM_VERSION_MINOR}.${YCM_VERSION_PATCH}")