diff --git a/CHANGELOG.md b/CHANGELOG.md
index 8de300af..5b7e5311 100755
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,22 @@
 # Changelog
 
+## [Ceiling] 1.0.0-rc.1 - 2026-07-17
+
+First release candidate for Ceiling 1.0.
+
+### Added
+- Guided first-run checklist in the empty dashboard for enabling providers, connecting sign-in, and turning on the floating bar.
+- Per-provider "How Ceiling gets this data" panel and a maintained data-sources reference describing each provider's source and precise local-first privacy behavior.
+
+### Changed
+- Ship English only and remove the unused non-English locale files.
+- Rewrite the browser-cookie documentation for Chromium App-Bound Encryption reality.
+
+### Fixed
+- Theme native dropdowns and checkboxes correctly in both dark and light mode.
+- Stop the pop-out dashboard from reopening at its minimum size.
+- Clarify the browser-cookie empty state and remove the last stale CodexBar naming.
+
 ## [Ceiling] 0.43.3 - 2026-07-16
 
 ### Security
diff --git a/Cargo.lock b/Cargo.lock
index 5b365bea..43d7707a 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -664,7 +664,7 @@ checksum = "c8d4a3bb8b1e0c1050499d1815f5ab16d04f0959b233085fb31653fbfc9d98f9"
 
 [[package]]
 name = "codexbar"
-version = "0.43.3"
+version = "1.0.0-rc.1"
 dependencies = [
  "aes-gcm",
  "anyhow",
@@ -705,7 +705,7 @@ dependencies = [
 
 [[package]]
 name = "codexbar-desktop-tauri"
-version = "0.43.3"
+version = "1.0.0-rc.1"
 dependencies = [
  "chrono",
  "codexbar",
diff --git a/apps/desktop-tauri/package.json b/apps/desktop-tauri/package.json
index 9b75ed0c..c0d5c5a4 100644
--- a/apps/desktop-tauri/package.json
+++ b/apps/desktop-tauri/package.json
@@ -1,7 +1,7 @@
 {
   "name": "desktop-tauri",
   "private": true,
-  "version": "0.43.3",
+  "version": "1.0.0-rc.1",
   "packageManager": "pnpm@10.18.1",
   "type": "module",
   "scripts": {
diff --git a/apps/desktop-tauri/src-tauri/Cargo.toml b/apps/desktop-tauri/src-tauri/Cargo.toml
index a3b8995e..29a16edb 100644
--- a/apps/desktop-tauri/src-tauri/Cargo.toml
+++ b/apps/desktop-tauri/src-tauri/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "codexbar-desktop-tauri"
-version = "0.43.3"
+version = "1.0.0-rc.1"
 edition = "2024"
 publish = false
 
diff --git a/apps/desktop-tauri/src-tauri/tauri.conf.json b/apps/desktop-tauri/src-tauri/tauri.conf.json
index 6c9ed443..aba96d5c 100644
--- a/apps/desktop-tauri/src-tauri/tauri.conf.json
+++ b/apps/desktop-tauri/src-tauri/tauri.conf.json
@@ -1,7 +1,7 @@
 {
   "$schema": "https://schema.tauri.app/config/2",
   "productName": "Ceiling",
-  "version": "0.43.3",
+  "version": "1.0.0-rc.1",
   "identifier": "io.github.tsouth89.ceiling",
   "build": {
     "beforeDevCommand": "pnpm run dev",
diff --git a/rust/Cargo.toml b/rust/Cargo.toml
index 66724f3e..c0529904 100755
--- a/rust/Cargo.toml
+++ b/rust/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "codexbar"
-version = "0.43.3"
+version = "1.0.0-rc.1"
 edition = "2024"
 authors = ["Ceiling Contributors"]
 description = "Local-first Windows companion for monitoring AI capacity and reset times"
diff --git a/version.env b/version.env
index edb047e5..4c38b55f 100755
--- a/version.env
+++ b/version.env
@@ -1,2 +1,2 @@
-MARKETING_VERSION=0.43.3
-BUILD_NUMBER=90
+MARKETING_VERSION=1.0.0-rc.1
+BUILD_NUMBER=91