diff --git a/roles/matrix-synapse/defaults/main.yml b/roles/matrix-synapse/defaults/main.yml
index d1d049d5e..d2d048414 100644
--- a/roles/matrix-synapse/defaults/main.yml
+++ b/roles/matrix-synapse/defaults/main.yml
@@ -321,6 +321,9 @@ matrix_synapse_push_include_content: true
 # URLs shared by users.
 matrix_synapse_url_preview_enabled: true
 
+# A list of values for the Accept-Language HTTP header used when downloading webpages during URL preview generation
+matrix_url_preview_accept_language: ['en-US', 'en']
+
 # Enable exposure of metrics to Prometheus
 # See https://github.com/matrix-org/synapse/blob/master/docs/metrics-howto.md
 matrix_synapse_metrics_enabled: false
diff --git a/roles/matrix-synapse/templates/synapse/homeserver.yaml.j2 b/roles/matrix-synapse/templates/synapse/homeserver.yaml.j2
index 1361eb9e1..e384853c1 100644
--- a/roles/matrix-synapse/templates/synapse/homeserver.yaml.j2
+++ b/roles/matrix-synapse/templates/synapse/homeserver.yaml.j2
@@ -1149,8 +1149,7 @@ max_spider_size: 10M
 #   - fr;q=0.8
 #   - *;q=0.7
 #
-url_preview_accept_language:
-#   - en
+url_preview_accept_language: {{ matrix_url_preview_accept_language|to_json }}
 
 
 ## Captcha ##