diff --git a/README.md b/README.md
index a92b90c..410e91d 100644
--- a/README.md
+++ b/README.md
@@ -42,12 +42,20 @@ brew tap simonbs/wut https://github.com/simonbs/wut.git
 brew install wut
 ```
 
-You'll need Git on your machine. After installation, add shell integration to your `~/.zshrc` or `~/.bashrc`:
+You'll need Git on your machine. After installation, add shell integration:
 
+**Bash/Zsh** - Add to `~/.bashrc` or `~/.zshrc`:
 ```sh
 eval "$(wut init)"
 ```
 
+**Fish** - Add to `~/.config/fish/config.fish`:
+```fish
+wut init | source
+```
+
+`wut init` uses the `$SHELL` environment variable to detect the shell. You can pass in `--zsh`, `--bash` or `--fish` to override the autodetection.
+
 This enables automatic directory changing when you run `wut new` or `wut go`. Without it, these commands will prompt you to set up shell integration.
 
 ## 🧭 Usage
diff --git a/cmd/wut/cmd_init.go b/cmd/wut/cmd_init.go
index b7c44e1..848e60f 100644
--- a/cmd/wut/cmd_init.go
+++ b/cmd/wut/cmd_init.go
@@ -8,8 +8,33 @@ import (
 	"github.com/simonbs/wut/src/worktree"
 )
 
-func cmdInit() {
+func cmdInit(args []string) {
+	shell := ""
+	for _, arg := range args {
+		switch arg {
+		case "--fish":
+			shell = "fish"
+		case "--bash":
+			shell = "bash"
+		case "--zsh":
+			shell = "zsh"
+		}
+	}
+	if shell == "" {
+		shell = detectShell()
+	}
+
 	binPath, _ := os.Executable()
+
+	switch shell {
+	case "fish":
+		printFishWrapper(binPath)
+	default:
+		printBashZshWrapper(binPath)
+	}
+}
+
+func printBashZshWrapper(binPath string) {
 	wrapper := `wut() {
   local wut_bin="` + binPath + `"
   export WUT_WRAPPER_ACTIVE=1
@@ -63,6 +88,42 @@ fi`
 	fmt.Println(wrapper)
 }
 
+func printFishWrapper(binPath string) {
+	wrapper := `function wut
+    set -l wut_bin "` + binPath + `"
+    set -x WUT_WRAPPER_ACTIVE 1
+    set -l output ($wut_bin $argv 2>&1)
+    set -l exit_code $status
+    set -l cd_marker (printf "%s\n" $output | grep "^__WUT_CD__:" | head -1)
+    if test -n "$cd_marker"
+        set -l target_dir (string replace "__WUT_CD__:" "" "$cd_marker")
+        if test -d "$target_dir"
+            cd "$target_dir"
+        end
+        set -l filtered (printf "%s\n" $output | grep -v "^__WUT_CD__:")
+        if test -n "$filtered"
+            printf "%s\n" $filtered
+        end
+    else
+        if test (count $output) -gt 0
+            printf "%s\n" $output
+        end
+    end
+    return $exit_code
+end
+
+# Subcommands
+complete -c wut -f -n "__fish_use_subcommand" -a "new" -d "Create new worktree"
+complete -c wut -f -n "__fish_use_subcommand" -a "list" -d "List worktrees"
+complete -c wut -f -n "__fish_use_subcommand" -a "go" -d "Go to worktree"
+complete -c wut -f -n "__fish_use_subcommand" -a "path" -d "Print worktree path"
+complete -c wut -f -n "__fish_use_subcommand" -a "rm" -d "Remove worktree"
+
+# Branch completions for go/path/rm
+complete -c wut -f -n "__fish_seen_subcommand_from go path rm" -a "(` + binPath + ` --completions branches 2>/dev/null)"`
+	fmt.Println(wrapper)
+}
+
 func cmdCompletions(args []string) {
 	if len(args) < 1 {
 		return
diff --git a/cmd/wut/help.go b/cmd/wut/help.go
index 23655db..d81d9e5 100644
--- a/cmd/wut/help.go
+++ b/cmd/wut/help.go
@@ -31,9 +31,23 @@ func printUsage() {
 	fmt.Println("  wut rm <branch> [--force]     🗑  Remove a worktree")
 
 	if !context.IsWrapperActive() {
+		dotfile := ""
+		command := ""
+		switch detectShell() {
+		case "bash":
+			dotfile = "~/.bashrc"
+			command = "eval \"$(wut init)\""
+		case "fish":
+			dotfile = "~/.config/fish/config.fish"
+			command = "wut init | source"
+		case "zsh":
+			dotfile = "~/.zshrc"
+			command = "eval \"$(wut init)\""
+		}
+
 		fmt.Println()
-		fmt.Println("⚠️  Add shell integration to ~/.zshrc or ~/.bashrc:")
+		fmt.Println("⚠️  Add shell integration to " + dotfile + ":")
 		fmt.Println()
-		fmt.Println("     eval \"$(wut init)\"")
+		fmt.Println("     " + command)
 	}
 }
diff --git a/cmd/wut/main.go b/cmd/wut/main.go
index 5744d3f..2789540 100644
--- a/cmd/wut/main.go
+++ b/cmd/wut/main.go
@@ -18,7 +18,7 @@ func main() {
 
 	switch cmd {
 	case "init":
-		cmdInit()
+		cmdInit(args)
 	case "new":
 		cmdNew(args)
 	case "list":
diff --git a/cmd/wut/utils.go b/cmd/wut/utils.go
index 3c07f96..7db4275 100644
--- a/cmd/wut/utils.go
+++ b/cmd/wut/utils.go
@@ -18,3 +18,14 @@ func tildify(path string) string {
 	}
 	return path
 }
+
+func detectShell() string {
+	shell := os.Getenv("SHELL")
+	if strings.Contains(shell, "fish") {
+		return "fish"
+	}
+	if strings.Contains(shell, "zsh") {
+		return "zsh"
+	}
+	return "bash"
+}