diff --git a/.github/ISSUE_TEMPLATE_CHECK_UPSTREAM_DEPENDENCY_PHP.md b/.github/ISSUE_TEMPLATE_CHECK_UPSTREAM_DEPENDENCY_PHP.md
index 16d47a7c..734b96e5 100755
--- a/.github/ISSUE_TEMPLATE_CHECK_UPSTREAM_DEPENDENCY_PHP.md
+++ b/.github/ISSUE_TEMPLATE_CHECK_UPSTREAM_DEPENDENCY_PHP.md
@@ -6,7 +6,7 @@ labels: update dependency
 
 Open tasks:
 
-- [ ] Compare Dockerfile of [latest PHP alpine CLI](https://github.com/docker-library/php/tree/master/8.2/alpine3.17/cli) with `./docker/Dockerfile` on intermediate build `php_embed`.
+- [ ] Compare Dockerfile of [latest PHP alpine CLI](https://github.com/docker-library/php/tree/master/8.2/alpine3.18/cli) with `./docker/Dockerfile` on intermediate build `php_embed`.
 - If there are updates:
   - [ ] Update local Dockerfile.
   - [ ] Add changelog entry.
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 5350f02c..532d1bb1 100755
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -10,6 +10,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ### Changed
 - Increase reference dataset version to 0.0.11, skipped 0.0.10.
 - Change default anonymous user to `2d376349-c5e2-42c8-8ce0-d6f525256cf7`.
+- Upgrade PHP to 8.2.11.
 ### Removed
 - Test command, closes #138.
 ### Fixed
diff --git a/docker/Dockerfile b/docker/Dockerfile
index 3757d955..f0d296e0 100755
--- a/docker/Dockerfile
+++ b/docker/Dockerfile
@@ -30,10 +30,10 @@ ENV PHPIZE_DEPS="\
     PHP_CPPFLAGS="$PHP_CFLAGS" \
     PHP_LDFLAGS="-Wl,-O1 -pie" \
     GPG_KEYS="39B641343D8C104B2B146DC3F9C39DC0B9698544 E60913E4DF209907D8E30D96659A97C9CF2A795A 1198C0117593497A5EC5C199286AF1F9897469DC" \
-    PHP_VERSION="8.2.10" \
-    PHP_URL="https://www.php.net/distributions/php-8.2.10.tar.xz" \
-    PHP_ASC_URL="https://www.php.net/distributions/php-8.2.10.tar.xz.asc" \
-    PHP_SHA256="561dc4acd5386e47f25be76f2c8df6ae854756469159248313bcf276e282fbb3"
+    PHP_VERSION="8.2.11" \
+    PHP_URL="https://www.php.net/distributions/php-8.2.11.tar.xz" \
+    PHP_ASC_URL="https://www.php.net/distributions/php-8.2.11.tar.xz.asc" \
+    PHP_SHA256="29af82e4f7509831490552918aad502697453f0869a579ee1b80b08f9112c5b8"
 
 # persistent / runtime deps
 RUN apk add --no-cache \