diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..7444713
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,2 @@
+dist/
+*.egg-info/
\ No newline at end of file
diff --git a/plugins/gelu.py b/plugins/gelu.py
deleted file mode 100644
index 2a907ed..0000000
--- a/plugins/gelu.py
+++ /dev/null
@@ -1,15 +0,0 @@
-from leanpass_plugins import PluginInfo, op
-import numpy as np
-
-info = PluginInfo(
-    name="gelu",
-    author="Test Contributor",
-    github_username="testcontrib",
-    description="Gaussian Error Linear Unit activation function."
-)
-
-@op(info.name)
-def gelu_forward(x):
-    # Standard GELU approximation
-    return 0.5 * x * (1 + np.tanh(np.sqrt(2 / np.pi) * (x + 0.044715 * np.power(x, 3))))
-
diff --git a/plugins/mish.py b/plugins/mish.py
new file mode 100644
index 0000000..be9e5a1
--- /dev/null
+++ b/plugins/mish.py
@@ -0,0 +1,17 @@
+from leanpass_plugins import PluginInfo, op
+import numpy as np
+
+info = PluginInfo(
+    name="mish",
+    author="Test Contributor",
+    github_username="testcontrib",
+    description="Mish activation function: x * tanh(softplus(x))."
+)
+
+@op(info.name)
+def mish_forward(x):
+    # Mish: x * tanh(ln(1 + e^x))
+    # np.log1p(np.exp(x)) is a numerically stable softplus
+    softplus_x = np.log1p(np.exp(x))
+    return x * np.tanh(softplus_x)
+