diff --git a/composer.json b/composer.json
index d0194e0..a5b40e0 100644
--- a/composer.json
+++ b/composer.json
@@ -31,7 +31,7 @@
         "phpstan/phpstan": "*",
         "php-coveralls/php-coveralls": "^2.4",
         "sweetrdf/rdf-interface-tests": "dev-master",
-        "sweetrdf/term-templates": "^1"
+        "sweetrdf/term-templates": "^1 | ^2"
     },
     "autoload-dev": {
         "psr-4": {