diff --git a/.config/s3.config.php b/.config/s3.config.php
index 38040ded..374cba2d 100644
--- a/.config/s3.config.php
+++ b/.config/s3.config.php
@@ -39,4 +39,10 @@ if (getenv('OBJECTSTORE_S3_BUCKET')) {
   } else {
     $CONFIG['objectstore']['arguments']['secret'] = '';
   }
+
+  if (getenv('OBJECTSTORE_S3_SSE_C_KEY_FILE') && file_exists(getenv('OBJECTSTORE_S3_SSE_C_KEY_FILE'))) {
+    $CONFIG['objectstore']['arguments']['sse_c_key'] = trim(file_get_contents(getenv('OBJECTSTORE_S3_SSE_C_KEY_FILE')));
+  } elseif (getenv('OBJECTSTORE_S3_SSE_C_KEY')) {
+    $CONFIG['objectstore']['arguments']['sse_c_key'] = getenv('OBJECTSTORE_S3_SSE_C_KEY');
+  }
 }
diff --git a/26/apache/config/s3.config.php b/26/apache/config/s3.config.php
index 38040ded..374cba2d 100644
--- a/26/apache/config/s3.config.php
+++ b/26/apache/config/s3.config.php
@@ -39,4 +39,10 @@ if (getenv('OBJECTSTORE_S3_BUCKET')) {
   } else {
     $CONFIG['objectstore']['arguments']['secret'] = '';
   }
+
+  if (getenv('OBJECTSTORE_S3_SSE_C_KEY_FILE') && file_exists(getenv('OBJECTSTORE_S3_SSE_C_KEY_FILE'))) {
+    $CONFIG['objectstore']['arguments']['sse_c_key'] = trim(file_get_contents(getenv('OBJECTSTORE_S3_SSE_C_KEY_FILE')));
+  } elseif (getenv('OBJECTSTORE_S3_SSE_C_KEY')) {
+    $CONFIG['objectstore']['arguments']['sse_c_key'] = getenv('OBJECTSTORE_S3_SSE_C_KEY');
+  }
 }
diff --git a/26/fpm-alpine/Dockerfile b/26/fpm-alpine/Dockerfile
index 6034a7a2..165496d1 100644
--- a/26/fpm-alpine/Dockerfile
+++ b/26/fpm-alpine/Dockerfile
@@ -1,5 +1,5 @@
 # DO NOT EDIT: created by update.sh from Dockerfile-alpine.template
-FROM php:8.2-fpm-alpine3.18
+FROM php:8.2-fpm-alpine3.19
 
 # entrypoint.sh and cron.sh dependencies
 RUN set -ex; \
diff --git a/26/fpm-alpine/config/s3.config.php b/26/fpm-alpine/config/s3.config.php
index 38040ded..374cba2d 100644
--- a/26/fpm-alpine/config/s3.config.php
+++ b/26/fpm-alpine/config/s3.config.php
@@ -39,4 +39,10 @@ if (getenv('OBJECTSTORE_S3_BUCKET')) {
   } else {
     $CONFIG['objectstore']['arguments']['secret'] = '';
   }
+
+  if (getenv('OBJECTSTORE_S3_SSE_C_KEY_FILE') && file_exists(getenv('OBJECTSTORE_S3_SSE_C_KEY_FILE'))) {
+    $CONFIG['objectstore']['arguments']['sse_c_key'] = trim(file_get_contents(getenv('OBJECTSTORE_S3_SSE_C_KEY_FILE')));
+  } elseif (getenv('OBJECTSTORE_S3_SSE_C_KEY')) {
+    $CONFIG['objectstore']['arguments']['sse_c_key'] = getenv('OBJECTSTORE_S3_SSE_C_KEY');
+  }
 }
diff --git a/26/fpm/config/s3.config.php b/26/fpm/config/s3.config.php
index 38040ded..374cba2d 100644
--- a/26/fpm/config/s3.config.php
+++ b/26/fpm/config/s3.config.php
@@ -39,4 +39,10 @@ if (getenv('OBJECTSTORE_S3_BUCKET')) {
   } else {
     $CONFIG['objectstore']['arguments']['secret'] = '';
   }
+
+  if (getenv('OBJECTSTORE_S3_SSE_C_KEY_FILE') && file_exists(getenv('OBJECTSTORE_S3_SSE_C_KEY_FILE'))) {
+    $CONFIG['objectstore']['arguments']['sse_c_key'] = trim(file_get_contents(getenv('OBJECTSTORE_S3_SSE_C_KEY_FILE')));
+  } elseif (getenv('OBJECTSTORE_S3_SSE_C_KEY')) {
+    $CONFIG['objectstore']['arguments']['sse_c_key'] = getenv('OBJECTSTORE_S3_SSE_C_KEY');
+  }
 }
diff --git a/27/apache/config/s3.config.php b/27/apache/config/s3.config.php
index 38040ded..374cba2d 100644
--- a/27/apache/config/s3.config.php
+++ b/27/apache/config/s3.config.php
@@ -39,4 +39,10 @@ if (getenv('OBJECTSTORE_S3_BUCKET')) {
   } else {
     $CONFIG['objectstore']['arguments']['secret'] = '';
   }
+
+  if (getenv('OBJECTSTORE_S3_SSE_C_KEY_FILE') && file_exists(getenv('OBJECTSTORE_S3_SSE_C_KEY_FILE'))) {
+    $CONFIG['objectstore']['arguments']['sse_c_key'] = trim(file_get_contents(getenv('OBJECTSTORE_S3_SSE_C_KEY_FILE')));
+  } elseif (getenv('OBJECTSTORE_S3_SSE_C_KEY')) {
+    $CONFIG['objectstore']['arguments']['sse_c_key'] = getenv('OBJECTSTORE_S3_SSE_C_KEY');
+  }
 }
diff --git a/27/fpm-alpine/Dockerfile b/27/fpm-alpine/Dockerfile
index c6bd258f..14546557 100644
--- a/27/fpm-alpine/Dockerfile
+++ b/27/fpm-alpine/Dockerfile
@@ -1,5 +1,5 @@
 # DO NOT EDIT: created by update.sh from Dockerfile-alpine.template
-FROM php:8.2-fpm-alpine3.18
+FROM php:8.2-fpm-alpine3.19
 
 # entrypoint.sh and cron.sh dependencies
 RUN set -ex; \
diff --git a/27/fpm-alpine/config/s3.config.php b/27/fpm-alpine/config/s3.config.php
index 38040ded..374cba2d 100644
--- a/27/fpm-alpine/config/s3.config.php
+++ b/27/fpm-alpine/config/s3.config.php
@@ -39,4 +39,10 @@ if (getenv('OBJECTSTORE_S3_BUCKET')) {
   } else {
     $CONFIG['objectstore']['arguments']['secret'] = '';
   }
+
+  if (getenv('OBJECTSTORE_S3_SSE_C_KEY_FILE') && file_exists(getenv('OBJECTSTORE_S3_SSE_C_KEY_FILE'))) {
+    $CONFIG['objectstore']['arguments']['sse_c_key'] = trim(file_get_contents(getenv('OBJECTSTORE_S3_SSE_C_KEY_FILE')));
+  } elseif (getenv('OBJECTSTORE_S3_SSE_C_KEY')) {
+    $CONFIG['objectstore']['arguments']['sse_c_key'] = getenv('OBJECTSTORE_S3_SSE_C_KEY');
+  }
 }
diff --git a/27/fpm/config/s3.config.php b/27/fpm/config/s3.config.php
index 38040ded..374cba2d 100644
--- a/27/fpm/config/s3.config.php
+++ b/27/fpm/config/s3.config.php
@@ -39,4 +39,10 @@ if (getenv('OBJECTSTORE_S3_BUCKET')) {
   } else {
     $CONFIG['objectstore']['arguments']['secret'] = '';
   }
+
+  if (getenv('OBJECTSTORE_S3_SSE_C_KEY_FILE') && file_exists(getenv('OBJECTSTORE_S3_SSE_C_KEY_FILE'))) {
+    $CONFIG['objectstore']['arguments']['sse_c_key'] = trim(file_get_contents(getenv('OBJECTSTORE_S3_SSE_C_KEY_FILE')));
+  } elseif (getenv('OBJECTSTORE_S3_SSE_C_KEY')) {
+    $CONFIG['objectstore']['arguments']['sse_c_key'] = getenv('OBJECTSTORE_S3_SSE_C_KEY');
+  }
 }
diff --git a/28/apache/config/s3.config.php b/28/apache/config/s3.config.php
index 38040ded..374cba2d 100644
--- a/28/apache/config/s3.config.php
+++ b/28/apache/config/s3.config.php
@@ -39,4 +39,10 @@ if (getenv('OBJECTSTORE_S3_BUCKET')) {
   } else {
     $CONFIG['objectstore']['arguments']['secret'] = '';
   }
+
+  if (getenv('OBJECTSTORE_S3_SSE_C_KEY_FILE') && file_exists(getenv('OBJECTSTORE_S3_SSE_C_KEY_FILE'))) {
+    $CONFIG['objectstore']['arguments']['sse_c_key'] = trim(file_get_contents(getenv('OBJECTSTORE_S3_SSE_C_KEY_FILE')));
+  } elseif (getenv('OBJECTSTORE_S3_SSE_C_KEY')) {
+    $CONFIG['objectstore']['arguments']['sse_c_key'] = getenv('OBJECTSTORE_S3_SSE_C_KEY');
+  }
 }
diff --git a/28/fpm-alpine/Dockerfile b/28/fpm-alpine/Dockerfile
index 1133744d..461b6b35 100644
--- a/28/fpm-alpine/Dockerfile
+++ b/28/fpm-alpine/Dockerfile
@@ -1,5 +1,5 @@
 # DO NOT EDIT: created by update.sh from Dockerfile-alpine.template
-FROM php:8.2-fpm-alpine3.18
+FROM php:8.2-fpm-alpine3.19
 
 # entrypoint.sh and cron.sh dependencies
 RUN set -ex; \
diff --git a/28/fpm-alpine/config/s3.config.php b/28/fpm-alpine/config/s3.config.php
index 38040ded..374cba2d 100644
--- a/28/fpm-alpine/config/s3.config.php
+++ b/28/fpm-alpine/config/s3.config.php
@@ -39,4 +39,10 @@ if (getenv('OBJECTSTORE_S3_BUCKET')) {
   } else {
     $CONFIG['objectstore']['arguments']['secret'] = '';
   }
+
+  if (getenv('OBJECTSTORE_S3_SSE_C_KEY_FILE') && file_exists(getenv('OBJECTSTORE_S3_SSE_C_KEY_FILE'))) {
+    $CONFIG['objectstore']['arguments']['sse_c_key'] = trim(file_get_contents(getenv('OBJECTSTORE_S3_SSE_C_KEY_FILE')));
+  } elseif (getenv('OBJECTSTORE_S3_SSE_C_KEY')) {
+    $CONFIG['objectstore']['arguments']['sse_c_key'] = getenv('OBJECTSTORE_S3_SSE_C_KEY');
+  }
 }
diff --git a/28/fpm/config/s3.config.php b/28/fpm/config/s3.config.php
index 38040ded..374cba2d 100644
--- a/28/fpm/config/s3.config.php
+++ b/28/fpm/config/s3.config.php
@@ -39,4 +39,10 @@ if (getenv('OBJECTSTORE_S3_BUCKET')) {
   } else {
     $CONFIG['objectstore']['arguments']['secret'] = '';
   }
+
+  if (getenv('OBJECTSTORE_S3_SSE_C_KEY_FILE') && file_exists(getenv('OBJECTSTORE_S3_SSE_C_KEY_FILE'))) {
+    $CONFIG['objectstore']['arguments']['sse_c_key'] = trim(file_get_contents(getenv('OBJECTSTORE_S3_SSE_C_KEY_FILE')));
+  } elseif (getenv('OBJECTSTORE_S3_SSE_C_KEY')) {
+    $CONFIG['objectstore']['arguments']['sse_c_key'] = getenv('OBJECTSTORE_S3_SSE_C_KEY');
+  }
 }
diff --git a/README.md b/README.md
index e51a8b3b..6f313954 100644
--- a/README.md
+++ b/README.md
@@ -191,6 +191,7 @@ To use an external S3 compatible object store as primary storage, set the follow
 - `OBJECTSTORE_S3_LEGACYAUTH` (default: `false`): Not required for AWS S3
 - `OBJECTSTORE_S3_OBJECT_PREFIX` (default: `urn:oid:`): Prefix to prepend to the fileid
 - `OBJECTSTORE_S3_AUTOCREATE` (default: `true`): Create the container if it does not exist
+- `OBJECTSTORE_S3_SSE_C_KEY` (not set by default): Base64 encoded key with a maximum length of 32 bytes for server side encryption (SSE-C)
 
 Check the [Nextcloud documentation](https://docs.nextcloud.com/server/latest/admin_manual/configuration_files/primary_storage.html#simple-storage-service-s3) for more information.
 
diff --git a/update.sh b/update.sh
index 9556d8ce..bea95729 100755
--- a/update.sh
+++ b/update.sh
@@ -2,7 +2,7 @@
 set -eo pipefail
 
 declare -A alpine_version=(
-	[default]='3.18'
+	[default]='3.19'
 )
 
 declare -A debian_version=(
diff --git a/versions.json b/versions.json
index 855f9932..4b973639 100644
--- a/versions.json
+++ b/versions.json
@@ -20,7 +20,7 @@
       "fpm-alpine": {
         "variant": "fpm-alpine",
         "base": "alpine",
-        "baseVersion": "3.18",
+        "baseVersion": "3.19",
         "phpVersion": "8.2"
       }
     }
@@ -46,7 +46,7 @@
       "fpm-alpine": {
         "variant": "fpm-alpine",
         "base": "alpine",
-        "baseVersion": "3.18",
+        "baseVersion": "3.19",
         "phpVersion": "8.2"
       }
     }
@@ -72,7 +72,7 @@
       "fpm-alpine": {
         "variant": "fpm-alpine",
         "base": "alpine",
-        "baseVersion": "3.18",
+        "baseVersion": "3.19",
         "phpVersion": "8.2"
       }
     }