diff --git a/src/codegen/transpiler.rs b/src/codegen/transpiler.rs
index 8522c6b..d27b389 100644
--- a/src/codegen/transpiler.rs
+++ b/src/codegen/transpiler.rs
@@ -652,6 +652,8 @@ impl Transpiler {
                     "cos" => "cos",
                     "floor" => "floor",
                     // Perlin noise functions
+                    "pnoise1d" => "pnoise1d",
+                    "pnoise2d" => "pnoise2d",
                     "pnoise3d" => "pnoise3d",
                     // File I/O API
                     "file_open" => "suic_file_open",
diff --git a/src/typechecker.rs b/src/typechecker.rs
index db49f36..5170fa8 100644
--- a/src/typechecker.rs
+++ b/src/typechecker.rs
@@ -997,6 +997,33 @@ impl TypeChecker {
         );
 
         // Perlin noise functions
+        self.env.functions.insert(
+            "pnoise1d".to_string(),
+            FunctionType {
+                type_params: vec![],
+                params: vec![
+                    Type::Float,
+                    Type::Float,
+                    Type::Int,
+                    Type::Int,
+                ], // x, persistence, octaves, seed
+                return_type: Type::Float,
+            },
+        );
+        self.env.functions.insert(
+            "pnoise2d".to_string(),
+            FunctionType {
+                type_params: vec![],
+                params: vec![
+                    Type::Float,
+                    Type::Float,
+                    Type::Float,
+                    Type::Int,
+                    Type::Int,
+                ], // x, y, persistence, octaves, seed
+                return_type: Type::Float,
+            },
+        );
         self.env.functions.insert(
             "pnoise3d".to_string(),
             FunctionType {