diff --git a/CMakeLists.txt b/CMakeLists.txt
index eef3a415..d81ac39c 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -30,7 +30,7 @@ include(DetermineVersion)
 
 # Set up our version.
 set(AvogadroApp_VERSION_MAJOR   "1")
-set(AvogadroApp_VERSION_MINOR   "99")
+set(AvogadroApp_VERSION_MINOR   "100")
 set(AvogadroApp_VERSION_PATCH   "0")
 set(AvogadroApp_VERSION
   "${AvogadroApp_VERSION_MAJOR}.${AvogadroApp_VERSION_MINOR}.${AvogadroApp_VERSION_PATCH}")
diff --git a/SECURITY.md b/SECURITY.md
index 359fc923..3739b21c 100644
--- a/SECURITY.md
+++ b/SECURITY.md
@@ -9,9 +9,9 @@ patches for widely used long-term-support OS.
 
 | Version | Supported          |
 | ------- | ------------------ |
+| 1.100.x | :white_check_mark: |
 | 1.99.x  | :white_check_mark: |
-| 1.98.x  | :white_check_mark: |
-| < 1.98  | :x:                |
+| < 1.99  | :x:                |
 
 ## Reporting a Vulnerability