diff --git a/source/mijin/io/stream.hpp b/source/mijin/io/stream.hpp
index 3cc1cf5..fb0b514 100644
--- a/source/mijin/io/stream.hpp
+++ b/source/mijin/io/stream.hpp
@@ -281,11 +281,11 @@ public:
     StreamError readLine(std::string& outString);
     mijin::Task<StreamError> c_readLine(std::string& outString);
 
-    template<typename TChar = char>
-    StreamError readAsString(std::basic_string<TChar>& outString);
+    template<typename TChar = char, typename TTraits = std::char_traits<TChar>, typename TAllocator = MIJIN_DEFAULT_ALLOCATOR<char>>
+    StreamError readAsString(std::basic_string<TChar, TTraits, TAllocator>& outString);
 
-    template<typename TChar = char>
-    mijin::Task<StreamError> c_readAsString(std::basic_string<TChar>& outString);
+    template<typename TChar = char, typename TTraits = std::char_traits<TChar>, typename TAllocator = MIJIN_DEFAULT_ALLOCATOR<char>>
+    mijin::Task<StreamError> c_readAsString(std::basic_string<TChar, TTraits, TAllocator>& outString);
 
     StreamError writeText(std::string_view str)
     {
@@ -438,8 +438,8 @@ mijin::Task<StreamError> Stream::c_readRest(BaseTypelessBuffer<TAllocator>& outB
     co_return StreamError::SUCCESS;
 }
 
-template<typename TChar>
-StreamError Stream::readAsString(std::basic_string<TChar>& outString)
+template<typename TChar, typename TTraits, typename TAllocator>
+StreamError Stream::readAsString(std::basic_string<TChar, TTraits, TAllocator>& outString)
 {
     static_assert(sizeof(TChar) == 1, "Can only read to 8-bit character types (char, unsigned char or char8_t");
 
@@ -474,8 +474,8 @@ StreamError Stream::readAsString(std::basic_string<TChar>& outString)
     return StreamError::SUCCESS;
 }
 
-template<typename TChar>
-mijin::Task<StreamError> Stream::c_readAsString(std::basic_string<TChar>& outString)
+template<typename TChar, typename TTraits, typename TAllocator>
+mijin::Task<StreamError> Stream::c_readAsString(std::basic_string<TChar, TTraits, TAllocator>& outString)
 {
     static_assert(sizeof(TChar) == 1, "Can only read to 8-bit character types (char, unsigned char or char8_t");