diff --git a/lib/array.sb b/lib/array.sb
new file mode 100644
index 0000000..9a7e76d
--- /dev/null
+++ b/lib/array.sb
@@ -0,0 +1,27 @@
+// Prints the size of an array
+fn len(arr: int[]): int {
+    let c: int = 0
+    while arr[c] {
+        c += 1
+    }
+
+    return c
+}
+
+// Reverses an array
+// TODO: fix me!
+fn rev(arr: int[]): int[] {
+
+    let l: int = len(arr)
+    let new_arr: int[] = []
+
+    let i: int = 0
+    let j: int = l
+    while i < l {
+        new_arr[i] = arr[j]
+        i = i - 1
+        j = j - 1
+    }
+
+    return new_arr
+}
\ No newline at end of file
diff --git a/lib/assert.sb b/lib/assert.sb
new file mode 100644
index 0000000..6a60191
--- /dev/null
+++ b/lib/assert.sb
@@ -0,0 +1,6 @@
+fn assert(condition: bool) {
+    if condition == false {
+        println("Assertion failed")
+        exit(1)
+    }
+}
\ No newline at end of file
diff --git a/lib/io.sb b/lib/io.sb
new file mode 100644
index 0000000..db32fea
--- /dev/null
+++ b/lib/io.sb
@@ -0,0 +1,10 @@
+// Raw wrapper around _printf builtin function.
+// Writes the given content to stdout
+fn print(arg: string) {
+    _printf(arg)
+}
+
+// Like print(), but with an extra newline ('\n') character
+fn println(msg: string) {
+    print(msg + "\n")
+}
diff --git a/lib/os.sb b/lib/os.sb
new file mode 100644
index 0000000..ba07443
--- /dev/null
+++ b/lib/os.sb
@@ -0,0 +1,4 @@
+// Exit the program immediately
+fn exit(code: int) {
+    _exit(code)
+}
\ No newline at end of file
diff --git a/lib/stdio.sb b/lib/stdio.sb
deleted file mode 100644
index ce40fc6..0000000
--- a/lib/stdio.sb
+++ /dev/null
@@ -1,50 +0,0 @@
-// Raw wrapper around _printf builtin function.
-// Writes the given content to stdout
-fn print(arg: string) {
-    _printf(arg)
-}
-
-// Like print(), but with an extra newline ('\n') character
-fn println(msg: string) {
-    print(msg + "\n")
-}
-
-// Exit the program immediately
-fn exit(code: int) {
-    _exit(code)
-}
-
-fn assert(condition: bool) {
-    if condition == false {
-        println("Assertion failed")
-        exit(1)
-    }
-}
-
-// Prints the size of an array
-fn len(arr: int[]): int {
-    let c: int = 0
-    while arr[c] {
-        c += 1
-    }
-
-    return c
-}
-
-// Reverses an array
-// TODO: fix me!
-fn rev(arr: int[]): int[] {
-
-    let l: int = len(arr)
-    let new_arr: int[] = []
-
-    let i: int = 0
-    let j: int = l
-    while i < l {
-        new_arr[i] = arr[j]
-        i = i - 1
-        j = j - 1
-    }
-
-    return new_arr
-}
\ No newline at end of file
diff --git a/lib/stdlib.sb b/lib/stdlib.sb
new file mode 100644
index 0000000..7a60eea
--- /dev/null
+++ b/lib/stdlib.sb
@@ -0,0 +1,4 @@
+import "array"
+import "assert"
+import "io"
+import "os"
\ No newline at end of file
diff --git a/src/builder/mod.rs b/src/builder/mod.rs
index 17fbe35..53f75d5 100644
--- a/src/builder/mod.rs
+++ b/src/builder/mod.rs
@@ -50,7 +50,7 @@ impl Builder {
         self.build_module(self.in_file.clone())?;
 
         // Append standard library
-        self.modules.push(build_stdlib());
+        self.build_stdlib();
         Ok(())
     }
 
@@ -83,15 +83,19 @@ impl Builder {
         file.write_all(output.as_bytes()).expect("write failed");
         file.flush().map_err(|_| "Could not flush file".into())
     }
-}
 
-fn build_stdlib() -> parser::node_type::Module {
-    let stdlib_raw =
-        Lib::get("stdio.sb").expect("Standard library not found. This should not occur.");
-    let stblib_str =
-        std::str::from_utf8(&stdlib_raw).expect("Could not interpret standard library.");
-    let stdlib_tokens = lexer::tokenize(&stblib_str);
+    fn build_stdlib(&mut self) {
+        let assets = Lib::iter();
 
-    parser::parse(stdlib_tokens, Some(stblib_str.into()), "stdio".to_string())
-        .expect("Could not parse stdlib")
+        for file in assets {
+            let stdlib_raw =
+                Lib::get(&file).expect("Standard library not found. This should not occur.");
+            let stblib_str =
+                std::str::from_utf8(&stdlib_raw).expect("Could not interpret standard library.");
+            let stdlib_tokens = lexer::tokenize(&stblib_str);
+            let module = parser::parse(stdlib_tokens, Some(stblib_str.into()), file.to_string())
+                .expect("Could not parse stdlib");
+            self.modules.push(module);
+        }
+    }
 }