diff --git a/HACKING.md b/HACKING.md
index 750e5f47c20..abfa86e8f27 100644
--- a/HACKING.md
+++ b/HACKING.md
@@ -19,8 +19,9 @@ The rules are mostly sorted in the alphabetical order.
     pkg: fix the network error logging issue
     ```
 
-    Where `pkg` is the package where most changes took place.  If there are
-    several such packages, or the change is top-level only, write `all`.
+    Where `pkg` is the directory or Go package (without the `internal/` part)
+    where most changes took place.  If there are several such packages, or the
+    change is top-level only, write `all`.
 
  *  Keep your commit messages, including headers, to eighty (**80**) columns.
 
diff --git a/README.md b/README.md
index f09da329813..e694452fea0 100644
--- a/README.md
+++ b/README.md
@@ -45,7 +45,7 @@
 
 AdGuard Home is a network-wide software for blocking ads & tracking. After you set it up, it'll cover ALL your home devices, and you don't need any client-side software for that.
 
-It operates as a DNS server that re-routes tracking domains to a "black hole," thus preventing your devices from connecting to those servers. It's based on software we use for our public [AdGuard DNS](https://adguard.com/en/adguard-dns/overview.html) servers -- both share a lot of common code.
+It operates as a DNS server that re-routes tracking domains to a "black hole", thus preventing your devices from connecting to those servers. It's based on software we use for our public [AdGuard DNS](https://adguard.com/en/adguard-dns/overview.html) servers -- both share a lot of common code.
 
 * [Getting Started](#getting-started)
 * [Comparing AdGuard Home to other solutions](#comparison)
@@ -170,7 +170,8 @@ You will need this to build AdGuard Home:
 
  * [go](https://golang.org/dl/) v1.14 or later.
  * [node.js](https://nodejs.org/en/download/) v10.16.2 or later.
- * [npm](https://www.npmjs.com/) v6.14 or later.
+ * [npm](https://www.npmjs.com/) v6.14 or later (temporary requirement, TODO: remove when redesign is finished).
+ * [yarn](https://yarnpkg.com/) v1.22.5 or later.
 
 ### Building
 
diff --git a/internal/home/config.go b/internal/home/config.go
index 92b2326c4b8..840678d4e1b 100644
--- a/internal/home/config.go
+++ b/internal/home/config.go
@@ -177,7 +177,7 @@ func initConfig() {
 	config.DHCP.Conf4.ICMPTimeout = 1000
 	config.DHCP.Conf6.LeaseDuration = 86400
 
-	if updateChannel == "none" || updateChannel == "edge" {
+	if updateChannel == "none" || updateChannel == "edge" || updateChannel == "development" {
 		config.BetaBindPort = 3001
 	}
 }
diff --git a/internal/home/controlinstall.go b/internal/home/controlinstall.go
index 3920af3c4dd..7d67d140fd6 100644
--- a/internal/home/controlinstall.go
+++ b/internal/home/controlinstall.go
@@ -371,9 +371,11 @@ func (web *Web) handleInstallConfigure(w http.ResponseWriter, r *http.Request) {
 		go func() {
 			_ = web.httpServer.Shutdown(context.TODO())
 		}()
-		go func() {
-			_ = web.httpServerBeta.Shutdown(context.TODO())
-		}()
+		if web.httpServerBeta != nil {
+			go func() {
+				_ = web.httpServerBeta.Shutdown(context.TODO())
+			}()
+		}
 	}
 }
 
diff --git a/openapi/openapi.yaml b/openapi/openapi.yaml
index ab1eac6959e..751eb0730ec 100644
--- a/openapi/openapi.yaml
+++ b/openapi/openapi.yaml
@@ -2324,7 +2324,7 @@
       'type': 'object'
       'description': 'Login request data'
       'properties':
-        'username':
+        'name':
           'type': 'string'
           'description': 'User name'
         'password':
diff --git a/scripts/make/build-release.sh b/scripts/make/build-release.sh
index 36dae35bcb9..4be4561610a 100644
--- a/scripts/make/build-release.sh
+++ b/scripts/make/build-release.sh
@@ -184,8 +184,8 @@ build() {
 	case "$build_os"
 	in
 	('darwin'|'windows')
-		build_archive="./${dist}/${build_ar}.zip"
-		zip -9 -q "$build_archive" "$build_dir"
+		build_archive="${PWD}/${dist}/${build_ar}.zip"
+		( cd "${dist}/${1}" && zip -9 -q -r "$build_archive" "./AdGuardHome" )
 		;;
 	(*)
 		build_archive="./${dist}/${build_ar}.tar.gz"
@@ -349,7 +349,7 @@ echo "{
 			echo "  \"download_${platform}\": \"${version_download_url}/${filename}\"," >> "$version_json"
 		fi
 
-		: "$(( i++ ))"
+		i="$(( i + 1 ))"
 	done
 )
 
diff --git a/scripts/make/go-lint.sh b/scripts/make/go-lint.sh
index 22a576166c4..417b6b57b0f 100644
--- a/scripts/make/go-lint.sh
+++ b/scripts/make/go-lint.sh
@@ -116,10 +116,12 @@ nilness ./...
 # shadow --strict ./...
 
 # TODO(a.garipov): Enable errcheck fully after handling all errors,
-# including the deferred ones, properly.  Also, perhaps, enable --blank.
+# including the deferred and generated ones, properly.  Also, perhaps,
+# enable --blank.
+#
 # errcheck ./...
 exit_on_output sh -c '
-	errcheck --asserts ./... |\
+	errcheck --asserts --ignoregenerated ./... |\
 		{ grep -e "defer" -e "_test\.go:" -v || exit 0; }
 '