diff --git a/micrograd/engine.py b/micrograd/engine.py
index afd82cc5..dd04763e 100644
--- a/micrograd/engine.py
+++ b/micrograd/engine.py
@@ -1,4 +1,6 @@
 
+import math
+
 class Value:
     """ stores a single scalar value and its gradient """
 
@@ -50,6 +52,17 @@ def _backward():
         out._backward = _backward
 
         return out
+    
+    def tanh(self):
+        x = self.data
+        t = (math.exp(2*x) - 1)/(math.exp(2*x)+1)
+        out = Value(t, (self,), 'TanH')
+
+        def _backward():
+            self.grad += (1-t**2) * out.grad
+        out._backward = _backward
+
+        return out
 
     def backward(self):