diff --git a/.changeset/add-missing-keyboard-keys.md b/.changeset/add-missing-keyboard-keys.md
new file mode 100644
index 0000000..0a8bcdf
--- /dev/null
+++ b/.changeset/add-missing-keyboard-keys.md
@@ -0,0 +1,6 @@
+---
+"@centralinc/browseragent": patch
+---
+
+Add missing symbolic key mappings to KeyboardUtils to fix "Unknown key" errors when using keys like `minus`, `plus`, `slash`, etc. in keyboard actions.
+
diff --git a/tools/utils/keyboard.ts b/tools/utils/keyboard.ts
index dd2cd6e..2880ed6 100644
--- a/tools/utils/keyboard.ts
+++ b/tools/utils/keyboard.ts
@@ -37,6 +37,22 @@ export class KeyboardUtils {
     f10: "F10",
     f11: "F11",
     f12: "F12",
+    // Symbolic keys
+    minus: "-",
+    plus: "+",
+    equal: "=",
+    equals: "=",
+    period: ".",
+    dot: ".",
+    comma: ",",
+    slash: "/",
+    backslash: "\\",
+    bracketleft: "[",
+    bracketright: "]",
+    semicolon: ";",
+    quote: "'",
+    backquote: "`",
+    tilde: "~",
   };
 
   static isModifierKey(key: string | undefined): boolean {