diff --git a/composer.json b/composer.json
index da554f2f..12e8a1ce 100644
--- a/composer.json
+++ b/composer.json
@@ -23,7 +23,7 @@
         "ext-libxml": "*",
         "ext-mbstring": "*",
         "ext-xmlreader": "*",
-        "jobcloud/zendpdf": "^2.0.3"
+        "jobcloud/zendpdf": "^3.0.0"
     },
     "require-dev": {
         "imagine/imagine": ">=0.2.0,<0.6.0",
diff --git a/docker/php/Dockerfile b/docker/php/Dockerfile
index 7e98e3d7..3a81b168 100644
--- a/docker/php/Dockerfile
+++ b/docker/php/Dockerfile
@@ -1,4 +1,4 @@
-FROM php:8.1-alpine3.19
+FROM php:8.3-alpine3.20
 
 ARG USER_ID