diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index 90c1fde..307f472 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -1,3 +1,3 @@
 {
-    ".": "1.20.0"
+    ".": "1.21.0"
 }
diff --git a/CHANGELOG.md b/CHANGELOG.md
index a29541d..43c6993 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,17 @@
 # Changelog
 
+## [1.21.0](https://github.com/ymirapp/php-runtime/compare/v1.20.0...v1.21.0) (2026-07-18)
+
+
+### Features
+
+* Add runtime maintenance mode support ([35ea720](https://github.com/ymirapp/php-runtime/commit/35ea720ddf488ac21237031fc9896fa7881d54a1))
+
+
+### Bug Fixes
+
+* Don't fail if encrypted environment file is missing ([2b3951f](https://github.com/ymirapp/php-runtime/commit/2b3951f3d65ca9ca5300057c174fb79c372748ef))
+
 ## [1.20.0](https://github.com/ymirapp/php-runtime/compare/v1.19.4...v1.20.0) (2026-07-02)
 
 
diff --git a/runtime/php-72/Dockerfile b/runtime/php-72/Dockerfile
index d3363b2..9eae24d 100644
--- a/runtime/php-72/Dockerfile
+++ b/runtime/php-72/Dockerfile
@@ -12,7 +12,7 @@ ARG DOCKER_PLATFORM
 FROM --platform=${DOCKER_PLATFORM} public.ecr.aws/lambda/provided:al2023-${CPU_ARCHITECTURE} as build-environment
 
 # x-release-please-start-version
-ARG YMIR_RUNTIME_VERSION=1.20.0
+ARG YMIR_RUNTIME_VERSION=1.21.0
 # x-release-please-end
 
 ENV BUILD_DIR="/tmp/build" INSTALL_DIR="/opt/ymir"
diff --git a/runtime/php-73/Dockerfile b/runtime/php-73/Dockerfile
index d9b56e2..4b90b39 100644
--- a/runtime/php-73/Dockerfile
+++ b/runtime/php-73/Dockerfile
@@ -12,7 +12,7 @@ ARG DOCKER_PLATFORM
 FROM --platform=${DOCKER_PLATFORM} public.ecr.aws/lambda/provided:al2023-${CPU_ARCHITECTURE} as build-environment
 
 # x-release-please-start-version
-ARG YMIR_RUNTIME_VERSION=1.20.0
+ARG YMIR_RUNTIME_VERSION=1.21.0
 # x-release-please-end
 
 ENV BUILD_DIR="/tmp/build" INSTALL_DIR="/opt/ymir"
diff --git a/runtime/php-74/Dockerfile b/runtime/php-74/Dockerfile
index f6856ae..795d4ee 100644
--- a/runtime/php-74/Dockerfile
+++ b/runtime/php-74/Dockerfile
@@ -11,7 +11,7 @@ ARG DOCKER_PLATFORM
 FROM --platform=${DOCKER_PLATFORM} public.ecr.aws/lambda/provided:al2023-${CPU_ARCHITECTURE} as build-environment
 
 # x-release-please-start-version
-ARG YMIR_RUNTIME_VERSION=1.20.0
+ARG YMIR_RUNTIME_VERSION=1.21.0
 # x-release-please-end
 
 ENV BUILD_DIR="/tmp/build" INSTALL_DIR="/opt/ymir"
diff --git a/runtime/php-80/Dockerfile b/runtime/php-80/Dockerfile
index 117315f..d621f32 100644
--- a/runtime/php-80/Dockerfile
+++ b/runtime/php-80/Dockerfile
@@ -11,7 +11,7 @@ ARG DOCKER_PLATFORM
 FROM --platform=${DOCKER_PLATFORM} public.ecr.aws/lambda/provided:al2023-${CPU_ARCHITECTURE} as build-environment
 
 # x-release-please-start-version
-ARG YMIR_RUNTIME_VERSION=1.20.0
+ARG YMIR_RUNTIME_VERSION=1.21.0
 # x-release-please-end
 
 ENV BUILD_DIR="/tmp/build" INSTALL_DIR="/opt/ymir"
diff --git a/runtime/php-81/Dockerfile b/runtime/php-81/Dockerfile
index ec8ea41..961ea90 100644
--- a/runtime/php-81/Dockerfile
+++ b/runtime/php-81/Dockerfile
@@ -11,7 +11,7 @@ ARG DOCKER_PLATFORM
 FROM --platform=${DOCKER_PLATFORM} public.ecr.aws/lambda/provided:al2023-${CPU_ARCHITECTURE} as build-environment
 
 # x-release-please-start-version
-ARG YMIR_RUNTIME_VERSION=1.20.0
+ARG YMIR_RUNTIME_VERSION=1.21.0
 # x-release-please-end
 
 ENV BUILD_DIR="/tmp/build" INSTALL_DIR="/opt/ymir"
diff --git a/runtime/php-82/Dockerfile b/runtime/php-82/Dockerfile
index ebe17a2..88c3e3e 100644
--- a/runtime/php-82/Dockerfile
+++ b/runtime/php-82/Dockerfile
@@ -11,7 +11,7 @@ ARG DOCKER_PLATFORM
 FROM --platform=${DOCKER_PLATFORM} public.ecr.aws/lambda/provided:al2023-${CPU_ARCHITECTURE} as build-environment
 
 # x-release-please-start-version
-ARG YMIR_RUNTIME_VERSION=1.20.0
+ARG YMIR_RUNTIME_VERSION=1.21.0
 # x-release-please-end
 
 ENV BUILD_DIR="/tmp/build" INSTALL_DIR="/opt/ymir"
diff --git a/runtime/php-83/Dockerfile b/runtime/php-83/Dockerfile
index 72afbeb..dbaf8be 100644
--- a/runtime/php-83/Dockerfile
+++ b/runtime/php-83/Dockerfile
@@ -11,7 +11,7 @@ ARG DOCKER_PLATFORM
 FROM --platform=${DOCKER_PLATFORM} public.ecr.aws/lambda/provided:al2023-${CPU_ARCHITECTURE} as build-environment
 
 # x-release-please-start-version
-ARG YMIR_RUNTIME_VERSION=1.20.0
+ARG YMIR_RUNTIME_VERSION=1.21.0
 # x-release-please-end
 
 ENV BUILD_DIR="/tmp/build" INSTALL_DIR="/opt/ymir"
diff --git a/runtime/php-84/Dockerfile b/runtime/php-84/Dockerfile
index 4ac57c1..4d9a8eb 100644
--- a/runtime/php-84/Dockerfile
+++ b/runtime/php-84/Dockerfile
@@ -11,7 +11,7 @@ ARG DOCKER_PLATFORM
 FROM --platform=${DOCKER_PLATFORM} public.ecr.aws/lambda/provided:al2023-${CPU_ARCHITECTURE} as build-environment
 
 # x-release-please-start-version
-ARG YMIR_RUNTIME_VERSION=1.20.0
+ARG YMIR_RUNTIME_VERSION=1.21.0
 # x-release-please-end
 
 ENV BUILD_DIR="/tmp/build" INSTALL_DIR="/opt/ymir"
diff --git a/runtime/php-85/Dockerfile b/runtime/php-85/Dockerfile
index 4ed6af1..b44f998 100644
--- a/runtime/php-85/Dockerfile
+++ b/runtime/php-85/Dockerfile
@@ -11,7 +11,7 @@ ARG DOCKER_PLATFORM
 FROM --platform=${DOCKER_PLATFORM} public.ecr.aws/lambda/provided:al2023-${CPU_ARCHITECTURE} as build-environment
 
 # x-release-please-start-version
-ARG YMIR_RUNTIME_VERSION=1.20.0
+ARG YMIR_RUNTIME_VERSION=1.21.0
 # x-release-please-end
 
 ENV BUILD_DIR="/tmp/build" INSTALL_DIR="/opt/ymir"