diff --git a/pkg/assume/assume.go b/pkg/assume/assume.go
index aef9df64..a88eac6f 100644
--- a/pkg/assume/assume.go
+++ b/pkg/assume/assume.go
@@ -464,7 +464,7 @@ func AssumeCommand(c *cli.Context) error {
 			return err
 		}
 
-		if cfg.DefaultBrowser == browser.FirefoxKey || cfg.DefaultBrowser == browser.WaterfoxKey || cfg.DefaultBrowser == browser.FirefoxStdoutKey || cfg.DefaultBrowser == browser.FirefoxDevEditionKey {
+		if cfg.DefaultBrowser == browser.FirefoxKey || cfg.DefaultBrowser == browser.WaterfoxKey || cfg.DefaultBrowser == browser.FirefoxStdoutKey || cfg.DefaultBrowser == browser.FirefoxDevEditionKey || cfg.DefaultBrowser == browser.FirefoxNightlyKey {
 			// transform the URL into the Firefox Tab Container format.
 			consoleURL = fmt.Sprintf("ext+granted-containers:name=%s&url=%s&color=%s&icon=%s", containerProfile, url.QueryEscape(consoleURL), profile.CustomGrantedProperty("color"), profile.CustomGrantedProperty("icon"))
 		}
@@ -500,6 +500,10 @@ func AssumeCommand(c *cli.Context) error {
 			l = launcher.FirefoxDevEdition{
 				ExecutablePath: browserPath,
 			}
+		case browser.FirefoxNightlyKey:
+			l = launcher.FirefoxNightly{
+				ExecutablePath: browserPath,
+			}
 		case browser.CommonFateKey:
 			l = launcher.CommonFate{
 				// for CommonFate, executable path must be set as custom browser path
diff --git a/pkg/browser/browsers.go b/pkg/browser/browsers.go
index 3817afe1..8e832d03 100644
--- a/pkg/browser/browsers.go
+++ b/pkg/browser/browsers.go
@@ -19,6 +19,7 @@ const (
 	FirefoxStdoutKey     string = "FIREFOX_STDOUT"
 	ArcKey               string = "ARC"
 	FirefoxDevEditionKey string = "FIREFOX_DEV"
+	FirefoxNightlyKey    string = "FIREFOX_NIGHTLY"
 	CommonFateKey        string = "COMMON_FATE"
 )
 
@@ -43,6 +44,10 @@ var FirefoxDevPathMac = []string{"/Applications/Firefox Developer Edition.app/Co
 var FirefoxDevPathLinux = []string{`/usr/bin/firefox-developer`, `/../../mnt/c/Program Files/Firefox Developer Edition/firefox.exe`}
 var FirefoxDevPathWindows = []string{`\Program Files\Firefox Developer Edition\firefox.exe`}
 
+var FirefoxNightlyPathMac = []string{"/Applications/Firefox Nightly.app/Contents/MacOS/firefox"}
+var FirefoxNightlyPathLinux = []string{`/usr/bin/firefox-nightly`, `/../../mnt/c/Program Files/Firefox Nightly/firefox.exe`}
+var FirefoxNightlyPathWindows = []string{`\Program Files\Firefox Nightly\firefox.exe`}
+
 var WaterfoxPathMac = []string{"/Applications/Waterfox.app/Contents/MacOS/waterfox"}
 var WaterfoxPathLinux = []string{`/usr/bin/waterfox`, `/../../mnt/c/Program Files/Waterfox/waterfox.exe`}
 var WaterfoxPathWindows = []string{`\Program Files\Waterfox\waterfox.exe`}
@@ -151,6 +156,24 @@ func FirefoxDevPathDefaults() ([]string, error) {
 	}
 }
 
+func FirefoxNightlyPathDefaults() ([]string, error) {
+	// check linuxpath for binary install
+	path, err := exec.LookPath("firefox-nightly")
+	if err == nil {
+		return []string{path}, nil
+	}
+	switch runtime.GOOS {
+	case "windows":
+		return FirefoxNightlyPathWindows, nil
+	case "darwin":
+		return FirefoxNightlyPathMac, nil
+	case "linux":
+		return FirefoxNightlyPathLinux, nil
+	default:
+		return nil, errors.New("os not supported")
+	}
+}
+
 func WaterfoxPathDefaults() ([]string, error) {
 	// check linuxpath for binary install
 	path, err := exec.LookPath("waterfox")
diff --git a/pkg/browser/detect.go b/pkg/browser/detect.go
index 26b1e534..a779da51 100644
--- a/pkg/browser/detect.go
+++ b/pkg/browser/detect.go
@@ -50,7 +50,7 @@ func HandleManualBrowserSelection() (string, error) {
 	withStdio := survey.WithStdio(os.Stdin, os.Stderr, os.Stderr)
 	in := survey.Select{
 		Message: "Select one of the browsers from the list",
-		Options: []string{"Chrome", "Brave", "Edge", "Firefox", "Waterfox", "Chromium", "Safari", "Stdout", "FirefoxStdout", "Firefox Developer Edition", "Arc"},
+		Options: []string{"Chrome", "Brave", "Edge", "Firefox", "Waterfox", "Chromium", "Safari", "Stdout", "FirefoxStdout", "Firefox Developer Edition", "Firefox Nightly", "Arc"},
 	}
 	var selection string
 	clio.NewLine()
@@ -108,6 +108,10 @@ func GetBrowserKey(b string) string {
 		return FirefoxDevEditionKey
 	}
 
+	if strings.ToLower(b) == "firefox nightly" {
+		return FirefoxNightlyKey
+	}
+
 	if strings.Contains(strings.ToLower(b), "brave") {
 		return BraveKey
 	}
@@ -159,6 +163,8 @@ func DetectInstallation(browserKey string) (string, bool) {
 		bPath, _ = ArcPathDefaults()
 	case FirefoxDevEditionKey:
 		bPath, _ = FirefoxDevPathDefaults()
+	case FirefoxNightlyKey:
+		bPath, _ = FirefoxNightlyPathDefaults()
 	default:
 		return "", false
 	}
@@ -241,7 +247,7 @@ func ConfigureBrowserSelection(browserName string, path string) error {
 			browserPath = customBrowserPath
 		}
 
-		if browserKey == FirefoxKey || browserKey == WaterfoxKey || browserKey == FirefoxDevEditionKey {
+		if browserKey == FirefoxKey || browserKey == WaterfoxKey || browserKey == FirefoxDevEditionKey || browserKey == FirefoxNightlyKey {
 			err := RunFirefoxExtensionPrompts(browserPath, browserName)
 			if err != nil {
 				return err
diff --git a/pkg/launcher/firefox_nightly.go b/pkg/launcher/firefox_nightly.go
new file mode 100644
index 00000000..eac9ed0a
--- /dev/null
+++ b/pkg/launcher/firefox_nightly.go
@@ -0,0 +1,15 @@
+package launcher
+
+type FirefoxNightly struct {
+	ExecutablePath string
+}
+
+func (l FirefoxNightly) LaunchCommand(url string, profile string) []string {
+	return []string{
+		l.ExecutablePath,
+		"--new-tab",
+		url,
+	}
+}
+
+func (l FirefoxNightly) UseForkProcess() bool { return true }