diff --git a/etc/firefox/policies/policies.json b/etc/firefox/policies/policies.json
index 13b4235f..331f093d 100644
--- a/etc/firefox/policies/policies.json
+++ b/etc/firefox/policies/policies.json
@@ -141,6 +141,7 @@
 							"https://raw.githubusercontent.com/DandelionSprout/adfilt/master/LegitimateURLShortener.txt",
 							"https://secure.fanboy.co.nz/fanboy-annoyance.txt",
 							"https://www.eff.org/files/effdntlist.txt",
+							"https://big.oisd.nl",
 							"ublock-abuse",
 							"ublock-badware",
 							"ublock-filters",
diff --git a/etc/opt/chromium/policies/managed/aminda-extensions.json b/etc/opt/chromium/policies/managed/aminda-extensions.json
index d63c2d17..77e02c0b 100644
--- a/etc/opt/chromium/policies/managed/aminda-extensions.json
+++ b/etc/opt/chromium/policies/managed/aminda-extensions.json
@@ -60,6 +60,7 @@
 						"https://raw.githubusercontent.com/DandelionSprout/adfilt/master/LegitimateURLShortener.txt",
 						"https://secure.fanboy.co.nz/fanboy-annoyance.txt",
 						"https://www.eff.org/files/effdntlist.txt",
+						"https://big.oisd.nl",
 						"ublock-abuse",
 						"ublock-badware",
 						"ublock-filters",