diff --git a/composer.json b/composer.json
index 44347e3..6f364bf 100644
--- a/composer.json
+++ b/composer.json
@@ -39,7 +39,7 @@
     "require-dev": {
         "phpunit/phpunit": "^7",
         "setasign/fpdf": "~1.8.6",
-        "tecnickcom/tcpdf": "^6.2",
+        "tecnickcom/tcpdf": "^6.8",
         "setasign/tfpdf": "~1.33",
         "squizlabs/php_codesniffer": "^3.5"
     },
diff --git a/composer.lock b/composer.lock
index e77d187..9bdd344 100644
--- a/composer.lock
+++ b/composer.lock
@@ -4,7 +4,7 @@
         "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#installing-dependencies",
         "This file is @generated automatically"
     ],
-    "content-hash": "2e9aa3c72fdbdd3d1b5977341757d7fe",
+    "content-hash": "b92a263a1492043f7f4eef64898cb64c",
     "packages": [],
     "packages-dev": [
         {