diff --git a/Dockerfile b/Dockerfile
index a9ae80b..e583522 100755
--- a/Dockerfile
+++ b/Dockerfile
@@ -121,6 +121,7 @@ RUN \
 	certbot-dns-transip \
 	certbot-dns-vultr \
 	certbot-plugin-gandi \
+	git+https://github.com/kylewlacy/certbot_dns_namecheap.git@wip/python3-v3 \
 	cryptography \
 	requests && \
  echo "**** remove unnecessary fail2ban filters ****" && \
diff --git a/Dockerfile.aarch64 b/Dockerfile.aarch64
index 4e24add..e00fd51 100755
--- a/Dockerfile.aarch64
+++ b/Dockerfile.aarch64
@@ -121,6 +121,7 @@ RUN \
 	certbot-dns-transip \
 	certbot-dns-vultr \
 	certbot-plugin-gandi \
+	git+https://github.com/kylewlacy/certbot_dns_namecheap.git@wip/python3-v3 \
 	cryptography \
 	requests && \
  echo "**** remove unnecessary fail2ban filters ****" && \
diff --git a/Dockerfile.armhf b/Dockerfile.armhf
index 0083a0f..4fd4e2e 100755
--- a/Dockerfile.armhf
+++ b/Dockerfile.armhf
@@ -121,6 +121,7 @@ RUN \
 	certbot-dns-transip \
 	certbot-dns-vultr \
 	certbot-plugin-gandi \
+	git+https://github.com/kylewlacy/certbot_dns_namecheap.git@wip/python3-v3 \
 	cryptography \
 	requests && \
  echo "**** remove unnecessary fail2ban filters ****" && \
diff --git a/readme-vars.yml b/readme-vars.yml
index 9885382..09d1e29 100755
--- a/readme-vars.yml
+++ b/readme-vars.yml
@@ -51,7 +51,7 @@ cap_add_param_vars:
 opt_param_usage_include_env: true
 opt_param_env_vars:
   - { env_var: "CERTPROVIDER", env_value: "", desc: "Optionally define the cert provider. Set to `zerossl` for ZeroSSL certs (requires existing [ZeroSSL account](https://app.zerossl.com/signup) and the e-mail address entered in `EMAIL` env var). Otherwise defaults to Let's Encrypt." }
-  - { env_var: "DNSPLUGIN", env_value: "cloudflare", desc: "Required if `VALIDATION` is set to `dns`. Options are `aliyun`, `cloudflare`, `cloudxns`, `cpanel`, `digitalocean`, `directadmin`, `dnsimple`, `dnsmadeeasy`, `domeneshop`, `gandi`, `gehirn`, `google`, `hetzner`, `inwx`, `linode`, `luadns`, `netcup`, `njalla`, `nsone`, `ovh`, `rfc2136`, `route53`, `sakuracloud`, `transip` and `vultr`. Also need to enter the credentials into the corresponding ini (or json for some plugins) file under `/config/dns-conf`." }
+  - { env_var: "DNSPLUGIN", env_value: "cloudflare", desc: "Required if `VALIDATION` is set to `dns`. Options are `aliyun`, `cloudflare`, `cloudxns`, `cpanel`, `digitalocean`, `directadmin`, `dnsimple`, `dnsmadeeasy`, `domeneshop`, `gandi`, `gehirn`, `google`, `hetzner`, `inwx`, `linode`, `luadns`, `namecheap`, `netcup`, `njalla`, `nsone`, `ovh`, `rfc2136`, `route53`, `sakuracloud`, `transip` and `vultr`. Also need to enter the credentials into the corresponding ini (or json for some plugins) file under `/config/dns-conf`." }
   - { env_var: "PROPAGATION", env_value: "", desc: "Optionally override (in seconds) the default propagation time for the dns plugins." }
   - { env_var: "DUCKDNSTOKEN", env_value: "", desc: "Required if `VALIDATION` is set to `duckdns`. Retrieve your token from https://www.duckdns.org" }
   - { env_var: "EMAIL", env_value: "", desc: "Optional e-mail address used for cert expiration notifications (Required for ZeroSSL)." }
@@ -151,6 +151,7 @@ app_setup_nginx_reverse_proxy_block: ""
 
 # changelog
 changelogs:
+  - { date: "13.04.21:", desc: "Add support for namecheap dns validation." }
   - { date: "12.04.21:", desc: "Add php7-gmp and php7-pecl-mailparse." }
   - { date: "12.04.21:", desc: "Add support for vultr dns validation." }
   - { date: "14.03.21:", desc: "Add support for directadmin dns validation." }
diff --git a/root/defaults/dns-conf/namecheap.ini b/root/defaults/dns-conf/namecheap.ini
new file mode 100644
index 0000000..dedccc4
--- /dev/null
+++ b/root/defaults/dns-conf/namecheap.ini
@@ -0,0 +1,2 @@
+certbot_dns_namecheap:dns_namecheap_username=my-username
+certbot_dns_namecheap:dns_namecheap_api_key=my-api-key
\ No newline at end of file
diff --git a/root/etc/cont-init.d/50-config b/root/etc/cont-init.d/50-config
index ceb22f4..b7ee5eb 100644
--- a/root/etc/cont-init.d/50-config
+++ b/root/etc/cont-init.d/50-config
@@ -99,7 +99,7 @@ if ! grep -q 'PARAMETERS' "/config/nginx/dhparams.pem"; then
 fi
 
 # check to make sure DNSPLUGIN is selected if dns validation is used
-[[ "$VALIDATION" = "dns" ]] && [[ ! "$DNSPLUGIN" =~ ^(aliyun|cloudflare|cloudxns|cpanel|digitalocean|directadmin|dnsimple|dnsmadeeasy|domeneshop|gandi|gehirn|google|hetzner|inwx|linode|luadns|netcup|njalla|nsone|ovh|rfc2136|route53|sakuracloud|transip|vultr)$ ]] && \
+[[ "$VALIDATION" = "dns" ]] && [[ ! "$DNSPLUGIN" =~ ^(aliyun|cloudflare|cloudxns|cpanel|digitalocean|directadmin|dnsimple|dnsmadeeasy|domeneshop|gandi|gehirn|google|hetzner|inwx|linode|luadns|namecheap|netcup|njalla|nsone|ovh|rfc2136|route53|sakuracloud|transip|vultr)$ ]] && \
   echo "Please set the DNSPLUGIN variable to a valid plugin name. See docker info for more details." && \
   sleep infinity
 
@@ -207,6 +207,9 @@ if [ "$VALIDATION" = "dns" ]; then
   elif [[ "$DNSPLUGIN" =~ ^(cpanel)$ ]]; then
     if [ -n "$PROPAGATION" ];then PROPAGATIONPARAM="--certbot-dns-${DNSPLUGIN}:${DNSPLUGIN}-propagation-seconds ${PROPAGATION}"; fi
     PREFCHAL="-a certbot-dns-${DNSPLUGIN}:${DNSPLUGIN} --certbot-dns-${DNSPLUGIN}:${DNSPLUGIN}-credentials /config/dns-conf/${DNSPLUGIN}.ini ${PROPAGATIONPARAM}"
+  elif [[ "$DNSPLUGIN" =~ ^(namecheap)$ ]]; then
+    if [ -n "$PROPAGATION" ];then PROPAGATIONPARAM="--certbot-dns-${DNSPLUGIN}:${DNSPLUGIN}-propagation-seconds ${PROPAGATION}"; fi
+    PREFCHAL="-a certbot-dns-${DNSPLUGIN}:dns-${DNSPLUGIN} --certbot-dns-${DNSPLUGIN}:dns-${DNSPLUGIN}-credentials /config/dns-conf/${DNSPLUGIN}.ini ${PROPAGATIONPARAM}"
   elif [[ "$DNSPLUGIN" =~ ^(gandi)$ ]]; then
     if [ -n "$PROPAGATION" ];then echo "Gandi dns plugin does not support setting propagation time"; fi
     PREFCHAL="-a certbot-plugin-${DNSPLUGIN}:dns --certbot-plugin-${DNSPLUGIN}:dns-credentials /config/dns-conf/${DNSPLUGIN}.ini"