diff --git a/source/_posts/caddy-nixos-part-3.md b/source/_posts/caddy-nixos-part-3.md
index 9cafdf6..c1aa8f2 100644
--- a/source/_posts/caddy-nixos-part-3.md
+++ b/source/_posts/caddy-nixos-part-3.md
@@ -8,6 +8,7 @@ tags:
 - linux
 - caddy
 - nixos
+- cloudflare
 ---
 
 > 9 Nov 2020: Updated to Caddy 2.1 syntax. Refer to {% post_link caddy-upgrade-v2-proxy 'this article' %} for upgrade guide.
diff --git a/source/_posts/cloudflare-registrar.md b/source/_posts/cloudflare-registrar.md
index c7ff1a3..9e3608c 100644
--- a/source/_posts/cloudflare-registrar.md
+++ b/source/_posts/cloudflare-registrar.md
@@ -3,6 +3,7 @@ title: Transfer new domains to Cloudflare Registrar
 excerpt: Register new domain on NameSilo, then transfer to Cloudflare
 date: 2019-09-05
 tags:
+- cloudflare
 ---
 
 [Cloudflare Registrar](https://www.cloudflare.com/products/registrar/) service was introduced back in [September 2018](https://blog.cloudflare.com/cloudflare-registrar/). It differs from other registrars by having no markup fees, meaning no additional cost on top of what it pays to the wholesale registry and [ICANN](https://en.wikipedia.org/wiki/ICANN). So, you essentially get the wholesale price. While you may find registrars that offer cheaper than the wholesale's (you can compare prices on [TLD-List.com](https://tld-list.com/)), it is likely that there are hidden costs somewhere.
diff --git a/source/_posts/firefox-doh-cloudflare.md b/source/_posts/firefox-doh-cloudflare.md
index e8230c6..8bef724 100644
--- a/source/_posts/firefox-doh-cloudflare.md
+++ b/source/_posts/firefox-doh-cloudflare.md
@@ -7,6 +7,7 @@ tags:
 - privacy
 - security
 - doh
+- cloudflare
 ---
 
 Many criticise Firefox for using Cloudflare by default in DNS-over-HTTPS. In reality, it's **not enabled** by default and you can **easily switch** to other providers.