diff --git a/OpenApi.yml b/OpenApi.yml
index f7150d4..71cde57 100644
--- a/OpenApi.yml
+++ b/OpenApi.yml
@@ -287,6 +287,12 @@ components:
           example: 128
         audio_pipeline:
           type: string
+        envs:
+          type: object
+          additionalProperties: 
+            type: string
+          example:
+            CUSTOM_ENV: custom value
 
     RoomStats:
       type: object
diff --git a/README.md b/README.md
index 6b2e1e3..2589aa7 100644
--- a/README.md
+++ b/README.md
@@ -84,7 +84,7 @@ docker-compose up -d
  - [x] add GUI
  - [x] add HTTPS support
  - [x] add authentication provider for traefik
- - [ ] allow specifying custom ENV variables
+ - [x] allow specifying custom ENV variables (TODO: FE.)
  - [ ] allow mounting direcotries for persistent data
  - [ ] add upgrade button
  - [ ] auto pull images, that do not exist
diff --git a/internal/types/room.go b/internal/types/room.go
index 4c6e311..a5b1503 100644
--- a/internal/types/room.go
+++ b/internal/types/room.go
@@ -5,8 +5,24 @@ import (
 	"strconv"
 	"strings"
 	"time"
+
+	"m1k1o/neko_rooms/internal/utils"
 )
 
+var blacklistedEnvs = []string{
+	// ignore bunch of default envs
+	"DEBIAN_FRONTEND",
+	"DISPLAY",
+	"USER",
+	"PATH",
+
+	// ignore bunch of envs managed by neko-rooms
+	"NEKO_BIND",
+	"NEKO_EPR",
+	"NEKO_NAT1TO1",
+	"NEKO_ICELITE",
+}
+
 type RoomsConfig struct {
 	Connections uint16   `json:"connections"`
 	NekoImages  []string `json:"neko_images"`
@@ -42,6 +58,8 @@ type RoomSettings struct {
 	AudioPipeline string `json:"audio_pipeline,omitempty"`
 
 	BroadcastPipeline string `json:"broadcast_pipeline,omitempty"`
+
+	Envs map[string]string `json:"envs"`
 }
 
 func (settings *RoomSettings) ToEnv() []string {
@@ -52,10 +70,6 @@ func (settings *RoomSettings) ToEnv() []string {
 		fmt.Sprintf("NEKO_MAX_FPS=%d", settings.VideoMaxFPS),
 	}
 
-	if settings.BroadcastPipeline != "" {
-		env = append(env, fmt.Sprintf("NEKO_BROADCAST_PIPELINE=%s", settings.BroadcastPipeline))
-	}
-
 	if settings.VideoCodec == "VP8" || settings.VideoCodec == "VP9" || settings.VideoCodec == "H264" {
 		env = append(env, fmt.Sprintf("NEKO_%s=true", strings.ToUpper(settings.VideoCodec)))
 	}
@@ -80,63 +94,79 @@ func (settings *RoomSettings) ToEnv() []string {
 		env = append(env, fmt.Sprintf("NEKO_AUDIO=%s", settings.AudioPipeline))
 	}
 
+	if settings.BroadcastPipeline != "" {
+		env = append(env, fmt.Sprintf("NEKO_BROADCAST_PIPELINE=%s", settings.BroadcastPipeline))
+	}
+
+	for key, val := range settings.Envs {
+		if in, _ := utils.ArrayIn(key, blacklistedEnvs); !in {
+			env = append(env, fmt.Sprintf("%s=%s", key, val))
+		}
+	}
+
 	return env
 }
 
 func (settings *RoomSettings) FromEnv(envs []string) error {
+	settings.Envs = map[string]string{}
+
 	var err error
 	for _, env := range envs {
-		r := strings.SplitAfterN(env, "=", 2)
+		r := strings.SplitN(env, "=", 2)
 		key := r[0]
 		val := r[1]
 
 		switch key {
-		case "NEKO_PASSWORD=":
+		case "NEKO_PASSWORD":
 			settings.UserPass = val
-		case "NEKO_PASSWORD_ADMIN=":
+		case "NEKO_PASSWORD_ADMIN":
 			settings.AdminPass = val
-		case "NEKO_SCREEN=":
+		case "NEKO_SCREEN":
 			settings.Screen = val
-		case "NEKO_MAX_FPS=":
+		case "NEKO_MAX_FPS":
 			settings.VideoMaxFPS, err = strconv.Atoi(val)
-		case "NEKO_BROADCAST_PIPELINE=":
+		case "NEKO_BROADCAST_PIPELINE":
 			settings.BroadcastPipeline = val
-		case "NEKO_VP8=":
+		case "NEKO_VP8":
 			if ok, _ := strconv.ParseBool(val); ok {
 				settings.VideoCodec = "VP8"
 			}
-		case "NEKO_VP9=":
+		case "NEKO_VP9":
 			if ok, _ := strconv.ParseBool(val); ok {
 				settings.VideoCodec = "VP9"
 			}
-		case "NEKO_H264=":
+		case "NEKO_H264":
 			if ok, _ := strconv.ParseBool(val); ok {
 				settings.VideoCodec = "H264"
 			}
-		case "NEKO_VIDEO_BITRATE=":
+		case "NEKO_VIDEO_BITRATE":
 			settings.VideoBitrate, err = strconv.Atoi(val)
-		case "NEKO_VIDEO=":
+		case "NEKO_VIDEO":
 			settings.VideoPipeline = val
-		case "NEKO_OPUS=":
+		case "NEKO_OPUS":
 			if ok, _ := strconv.ParseBool(val); ok {
 				settings.AudioCodec = "OPUS"
 			}
-		case "NEKO_G722=":
+		case "NEKO_G722":
 			if ok, _ := strconv.ParseBool(val); ok {
 				settings.AudioCodec = "G722"
 			}
-		case "NEKO_PCMU=":
+		case "NEKO_PCMU":
 			if ok, _ := strconv.ParseBool(val); ok {
 				settings.AudioCodec = "PCMU"
 			}
-		case "NEKO_PCMA=":
+		case "NEKO_PCMA":
 			if ok, _ := strconv.ParseBool(val); ok {
 				settings.AudioCodec = "PCMA"
 			}
-		case "NEKO_AUDIO_BITRATE=":
+		case "NEKO_AUDIO_BITRATE":
 			settings.AudioBitrate, err = strconv.Atoi(val)
-		case "NEKO_AUDIO=":
+		case "NEKO_AUDIO":
 			settings.AudioPipeline = val
+		default:
+			if in, _ := utils.ArrayIn(key, blacklistedEnvs); !in {
+				settings.Envs[key] = val
+			}
 		}
 
 		if err != nil {