diff --git a/src/decoders.gleam b/src/decoders.gleam
--- a/src/decoders.gleam
+++ b/src/decoders.gleam
@@ -8,7 +8,7 @@
 import protobin.{
   type BytePos, type DecodeResult, type ValueParser, Parsed, parse, parse_varint,
 }
-import internal/util
+import protobin/internal/util
 
 /// Decode a repeated field that may be either packed or expanded.
 /// 
diff --git a/src/protobin.gleam b/src/protobin.gleam
--- a/src/protobin.gleam
+++ b/src/protobin.gleam
@@ -7,8 +7,8 @@
 import gleam/option
 import gleam/result
 
-import internal/util
-import internal/wire_type.{type WireType}
+import protobin/internal/util
+import protobin/internal/wire_type.{type WireType}
 
 pub fn parse(
   from bits: BitArray,
diff --git a/src/internal/util.gleam b/src/internal/util.gleam
deleted file mode 100644
--- a/src/internal/util.gleam
+++ /dev/null
@@ -1,8 +0,0 @@
-import gleam/bit_array
-
-pub fn bit_array_to_uint(bits: BitArray) -> Int {
-  let size = bit_array.bit_size(bits)
-  // Interpert the entire bit array as an unsigned int
-  let assert <<n:unsigned-big-size(size)>> = bits
-  n
-}
diff --git a/src/internal/wire_type.gleam b/src/internal/wire_type.gleam
deleted file mode 100644
--- a/src/internal/wire_type.gleam
+++ /dev/null
@@ -1,18 +0,0 @@
-import gleam/option.{type Option, None, Some}
-
-pub type WireType {
-  VarInt
-  I64
-  Len
-  I32
-}
-
-pub fn parse(i: Int) -> Option(WireType) {
-  case i {
-    0 -> Some(VarInt)
-    1 -> Some(I64)
-    2 -> Some(Len)
-    5 -> Some(I32)
-    _ -> None
-  }
-}
diff --git a/src/protobin/internal/util.gleam b/src/protobin/internal/util.gleam
new file mode 100644
--- /dev/null
+++ b/src/protobin/internal/util.gleam
@@ -0,0 +1,8 @@
+import gleam/bit_array
+
+pub fn bit_array_to_uint(bits: BitArray) -> Int {
+  let size = bit_array.bit_size(bits)
+  // Interpert the entire bit array as an unsigned int
+  let assert <<n:unsigned-big-size(size)>> = bits
+  n
+}
diff --git a/src/protobin/internal/wire_type.gleam b/src/protobin/internal/wire_type.gleam
new file mode 100644
--- /dev/null
+++ b/src/protobin/internal/wire_type.gleam
@@ -0,0 +1,18 @@
+import gleam/option.{type Option, None, Some}
+
+pub type WireType {
+  VarInt
+  I64
+  Len
+  I32
+}
+
+pub fn parse(i: Int) -> Option(WireType) {
+  case i {
+    0 -> Some(VarInt)
+    1 -> Some(I64)
+    2 -> Some(Len)
+    5 -> Some(I32)
+    _ -> None
+  }
+}