diff --git a/CHANGELOG.md b/CHANGELOG.md
index e32c3dfd9..e52c04bdf 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,10 @@
 
 ## Unreleased
 
+### Added
+- Added support for PHP 8.1.
+- Added support for more Linux distributions when installing certificates. ([#380](https://github.com/craftcms/nitro/issues/380), [#414](https://github.com/craftcms/nitro/issues/414))
+
 ### Removed
 - Removed the `blackfire` command.
 
diff --git a/Dockerfile b/Dockerfile
index c393108db..12b4ffb7b 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -2,7 +2,7 @@
 FROM caddy:2.3.0-alpine AS caddy
 
 # build the api
-FROM golang:1.16-alpine AS builder
+FROM golang:1.17-alpine AS builder
 ARG NITRO_VERSION
 ENV NITRO_VERSION=${NITRO_VERSION}
 WORKDIR /go/src/github.com/craftcms/nitro
@@ -10,7 +10,7 @@ COPY . .
 RUN GOOS=linux go build -ldflags="-s -w -X 'github.com/craftcms/nitro/pkg/api/api.Version=${NITRO_VERSION}'" -o nitrod ./cmd/nitrod
 
 # build the final image
-FROM alpine:3.12
+FROM alpine:3
 
 # See https://caddyserver.com/docs/conventions#file-locations for details
 ENV XDG_CONFIG_HOME /config
diff --git a/Makefile b/Makefile
index 3e3d4c220..b617d4c8f 100644
--- a/Makefile
+++ b/Makefile
@@ -1,6 +1,6 @@
 .PHONY: docker docs
 
-VERSION ?= 2.0.8
+VERSION ?= 2.0.9
 
 build:
 	go build -trimpath -ldflags="-s -w -X 'github.com/craftcms/nitro/command/version.Version=${VERSION}'" -o nitro ./cmd/nitro
@@ -20,7 +20,7 @@ build-linux-arm:
 mod:
 	go mod tidy && go mod verify
 
-docker:
+proxy:
 	docker build --build-arg NITRO_VERSION=${VERSION} -t craftcms/nitro-proxy:${VERSION} .
 docs:
 	go run cmd/docs/main.go
diff --git a/command/update/update.go b/command/update/update.go
index 813893e91..630fd38da 100644
--- a/command/update/update.go
+++ b/command/update/update.go
@@ -20,6 +20,7 @@ import (
 
 var (
 	DockerImages = map[string]string{
+		"nginx:8.1-dev":                  "docker.io/craftcms/nginx:8.1-dev",
 		"nginx:8.0-dev":                  "docker.io/craftcms/nginx:8.0-dev",
 		"nginx:7.4-dev":                  "docker.io/craftcms/nginx:7.4-dev",
 		"nginx:7.3-dev":                  "docker.io/craftcms/nginx:7.3-dev",
diff --git a/go.mod b/go.mod
index 2fb2ef2f3..001fdf4e6 100644
--- a/go.mod
+++ b/go.mod
@@ -1,32 +1,51 @@
 module github.com/craftcms/nitro
 
-go 1.16
+go 1.17
+
+require (
+	github.com/docker/docker v20.10.1+incompatible
+	github.com/docker/go-connections v0.4.0
+	github.com/go-sql-driver/mysql v1.5.0
+	github.com/golang/protobuf v1.4.3
+	github.com/google/uuid v1.2.0
+	github.com/minio/selfupdate v0.3.1
+	github.com/mitchellh/go-homedir v1.1.0
+	github.com/opencontainers/image-spec v1.0.1
+	github.com/rodaine/table v1.0.1
+	github.com/spf13/cobra v1.1.1
+	google.golang.org/grpc v1.34.0
+	google.golang.org/protobuf v1.25.0
+	gopkg.in/yaml.v3 v3.0.0-20200615113413-eeeca48fe776
+)
 
 require (
 	github.com/Microsoft/go-winio v0.4.16 // indirect
 	github.com/Microsoft/hcsshim v0.8.14 // indirect
+	github.com/containerd/cgroups v0.0.0-20200531161412-0dbf7f05ba59 // indirect
 	github.com/containerd/containerd v1.4.3 // indirect
 	github.com/containerd/continuity v0.0.0-20201208142359-180525291bb7 // indirect
+	github.com/cpuguy83/go-md2man/v2 v2.0.0 // indirect
 	github.com/docker/distribution v2.7.1+incompatible // indirect
-	github.com/docker/docker v20.10.1+incompatible
-	github.com/docker/go-connections v0.4.0
-	github.com/go-sql-driver/mysql v1.5.0
-	github.com/golang/protobuf v1.4.3
+	github.com/docker/go-units v0.4.0 // indirect
+	github.com/gogo/protobuf v1.3.1 // indirect
 	github.com/google/go-cmp v0.5.2 // indirect
-	github.com/google/uuid v1.2.0
 	github.com/gorilla/mux v1.8.0 // indirect
 	github.com/hashicorp/golang-lru v0.5.4 // indirect
+	github.com/inconshreveable/mousetrap v1.0.0 // indirect
 	github.com/kr/pretty v0.2.1 // indirect
-	github.com/minio/selfupdate v0.3.1
-	github.com/mitchellh/go-homedir v1.1.0
 	github.com/moby/sys/mount v0.2.0 // indirect
+	github.com/moby/sys/mountinfo v0.4.0 // indirect
 	github.com/moby/term v0.0.0-20201216013528-df9cb8a40635 // indirect
 	github.com/morikuni/aec v1.0.0 // indirect
-	github.com/opencontainers/image-spec v1.0.1
+	github.com/opencontainers/go-digest v1.0.0 // indirect
 	github.com/opencontainers/runc v0.1.1 // indirect
-	github.com/rodaine/table v1.0.1
+	github.com/pkg/errors v0.9.1 // indirect
+	github.com/russross/blackfriday/v2 v2.0.1 // indirect
+	github.com/shurcooL/sanitized_anchor_name v1.0.0 // indirect
 	github.com/sirupsen/logrus v1.7.0 // indirect
-	github.com/spf13/cobra v1.1.1
+	github.com/spf13/pflag v1.0.5 // indirect
+	go.opencensus.io v0.22.0 // indirect
+	golang.org/x/crypto v0.0.0-20200709230013-948cd5f35899 // indirect
 	golang.org/x/net v0.0.0-20201224014010-6772e930b67b // indirect
 	golang.org/x/sync v0.0.0-20200317015054-43a5402ce75a // indirect
 	golang.org/x/sys v0.0.0-20210124154548-22da62e12c0c // indirect
@@ -34,9 +53,7 @@ require (
 	golang.org/x/time v0.0.0-20200630173020-3af7569d3a1e // indirect
 	golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1 // indirect
 	google.golang.org/genproto v0.0.0-20201214200347-8c77b98c765d // indirect
-	google.golang.org/grpc v1.34.0
-	google.golang.org/protobuf v1.25.0
 	gopkg.in/check.v1 v1.0.0-20190902080502-41f04d3bba15 // indirect
-	gopkg.in/yaml.v3 v3.0.0-20200615113413-eeeca48fe776
+	gopkg.in/yaml.v2 v2.2.8 // indirect
 	gotest.tools/v3 v3.0.3 // indirect
 )
diff --git a/pkg/certinstall/certinstall_linux.go b/pkg/certinstall/certinstall_linux.go
index 797bde5b0..821ab76da 100644
--- a/pkg/certinstall/certinstall_linux.go
+++ b/pkg/certinstall/certinstall_linux.go
@@ -1,4 +1,5 @@
-// +build linux, !darwin
+//go:build (linux && ignore) || !darwin
+// +build linux,ignore !darwin
 
 package certinstall
 
@@ -99,7 +100,7 @@ func identify(description string) (string, error) {
 	}
 
 	// detect debian systems
-	if strings.Contains(description, "Ubuntu") || strings.Contains(description, "Pop!_OS") || strings.Contains(description, "Mint") || strings.Contains(description, "elementary") || strings.Contains(description, "Debian") {
+	if strings.Contains(description, "Ubuntu") || strings.Contains(description, "Pop!_OS") || strings.Contains(description, "Mint") || strings.Contains(description, "elementary") || strings.Contains(description, "Debian") || strings.Contains(description, "Zorin OS") {
 		return "debian", nil
 	}
 
diff --git a/pkg/config/config.go b/pkg/config/config.go
index 2cb1a1d8b..eaa634276 100644
--- a/pkg/config/config.go
+++ b/pkg/config/config.go
@@ -783,13 +783,13 @@ func xdebugVars(php PHP, xdebug bool, version, hostname, addr string) []string {
 	}
 
 	switch version {
-	case "8.0", "7.4", "7.3", "7.2":
-		envs = append(envs, fmt.Sprintf(`XDEBUG_CONFIG=client_host=%s client_port=9003`, addr))
-		envs = append(envs, "XDEBUG_MODE=develop,debug")
-	default:
+	case "7.1", "7.0":
 		// use legacy xdebug settings to support older versions of php
 		envs = append(envs, fmt.Sprintf(`XDEBUG_CONFIG=idekey=PHPSTORM remote_host=%s profiler_enable=1 remote_port=9000 remote_autostart=1 remote_enable=1`, addr))
 		envs = append(envs, "XDEBUG_MODE=xdebug2")
+	default:
+		envs = append(envs, fmt.Sprintf(`XDEBUG_CONFIG=client_host=%s client_port=9003`, addr))
+		envs = append(envs, "XDEBUG_MODE=develop,debug")
 	}
 
 	return envs
diff --git a/pkg/phpversions/phpversions.go b/pkg/phpversions/phpversions.go
index f5d7ef72e..5b5b46ba8 100644
--- a/pkg/phpversions/phpversions.go
+++ b/pkg/phpversions/phpversions.go
@@ -2,6 +2,7 @@ package phpversions
 
 // Versions is the known PHP versions we support
 var Versions = []string{
+	"8.1",
 	"8.0",
 	"7.4",
 	"7.3",
diff --git a/pkg/validate/validate.go b/pkg/validate/validate.go
index 91ffed95e..ca437c1d9 100644
--- a/pkg/validate/validate.go
+++ b/pkg/validate/validate.go
@@ -93,7 +93,7 @@ type PHPVersionValidator struct{}
 
 func (v *PHPVersionValidator) Validate(input string) error {
 	switch input {
-	case "8.0", "7.4", "7.3", "7.2", "7.1", "7.0":
+	case "8.1", "8.0", "7.4", "7.3", "7.2", "7.1", "7.0":
 		return nil
 	}