diff --git a/lang10/contracts/contract.yaml b/lang10/contracts/1.0.0/contract.yaml
similarity index 100%
rename from lang10/contracts/contract.yaml
rename to lang10/contracts/1.0.0/contract.yaml
diff --git a/lang10/contracts/hello.sympl b/lang10/contracts/1.0.0/hello.sympl
similarity index 79%
rename from lang10/contracts/hello.sympl
rename to lang10/contracts/1.0.0/hello.sympl
index 74ced9d..9de9803 100644
--- a/lang10/contracts/hello.sympl
+++ b/lang10/contracts/1.0.0/hello.sympl
@@ -2,6 +2,7 @@ import prelude version 1.0.0 as prelude
 import std version 1.0.0 as std
 import cvm_clientside version 1.0.0 as cvm_clientside
 
+# Our first contract! Says "hello" to the world.
 @clientside
 def hello_world() -> str:
     return "Hello world!"
diff --git a/lang10/contracts/1.0.1/contract.yaml b/lang10/contracts/1.0.1/contract.yaml
new file mode 100644
index 0000000..2e11e11
--- /dev/null
+++ b/lang10/contracts/1.0.1/contract.yaml
@@ -0,0 +1,3 @@
+name: hello
+version: "1.0.1"
+language: 10
diff --git a/lang10/contracts/1.0.1/hello.sympl b/lang10/contracts/1.0.1/hello.sympl
new file mode 100644
index 0000000..8cfa923
--- /dev/null
+++ b/lang10/contracts/1.0.1/hello.sympl
@@ -0,0 +1,15 @@
+import prelude version 1.0.0 as prelude
+import std version 1.0.0 as std
+import cvm_clientside version 1.0.0 as cvm_clientside
+
+# Additional imports
+import unqualified globals version 1.0.0
+import cvm_executable version 1.0.0 as cvm_executable
+
+# Our first contract, modified again to show off a few more features.
+@clientside
+def hello_world(name: str='Alice') -> str:
+    message = f'Hello {name}!'
+    if name == "Count Rugen":
+        message = "Hello. My name is Inigo Montoya. You killed my father. Prepare to die."
+    return message