diff --git a/dbg.h b/dbg.h
index 1c0d24f..6ebcd70 100644
--- a/dbg.h
+++ b/dbg.h
@@ -653,8 +653,12 @@ class DebugOutput {
   // Helper alias to avoid obscure type `const char* const*` in signature.
   using expr_t = const char*;
 
-  DebugOutput(const char* filepath, int line, const char* function_name)
-      : m_use_colorized_output(isColorizedOutputEnabled()) {
+  DebugOutput(std::ostream& os,
+              bool colorized_output,
+              const char* filepath,
+              int line,
+              const char* function_name)
+      : m_use_colorized_output(colorized_output), stream(os) {
     std::string path = filepath;
     const std::size_t path_length = path.length();
     if (path_length > MAX_PATH_LENGTH) {
@@ -696,7 +700,7 @@ class DebugOutput {
       output << " (" << ansi(ANSI_TYPE) << *type << ansi(ANSI_RESET) << ")";
     }
     output << std::endl;
-    std::cerr << output.str();
+    stream << output.str();
 
     return std::forward<T>(value);
   }
@@ -719,6 +723,7 @@ class DebugOutput {
   }
 
   const bool m_use_colorized_output;
+  std::ostream& stream;
 
   std::string m_location;
 
@@ -802,10 +807,12 @@ auto identity(T&&, U&&... u) -> last_t<U...> {
 
 #define DBG_TYPE_NAME(x) dbg::type_name<decltype(x)>()
 
-#define dbg(...)                                    \
-  dbg::DebugOutput(__FILE__, __LINE__, __func__)    \
-      .print({DBG_MAP(DBG_STRINGIFY, __VA_ARGS__)}, \
+#define dbg_to(stream, colorized_output, ...)                              \
+  dbg::DebugOutput(stream, colorized_output, __FILE__, __LINE__, __func__) \
+      .print({DBG_MAP(DBG_STRINGIFY, __VA_ARGS__)},                        \
              {DBG_MAP(DBG_TYPE_NAME, __VA_ARGS__)}, __VA_ARGS__)
+
+#define dbg(...) dbg_to(std::cerr, dbg::isColorizedOutputEnabled(), __VA_ARGS__)
 #else
 #define dbg(...) dbg::identity(__VA_ARGS__)
 #endif  // DBG_MACRO_DISABLE
diff --git a/tests/basic.cpp b/tests/basic.cpp
index 4c312e7..10d26f0 100644
--- a/tests/basic.cpp
+++ b/tests/basic.cpp
@@ -25,8 +25,9 @@ std::string pretty_print(T&& value) {
   return stream.str();
 }
 
-#define dbg_def(def)                             \
-  dbg::DebugOutput(__FILE__, __LINE__, __func__) \
+#define dbg_def(def)                                                     \
+  dbg::DebugOutput(std::cerr, dbg::isColorizedOutputEnabled(), __FILE__, \
+                   __LINE__, __func__)                                   \
       .print({#def}, {"definition"}, def)
 
 TEST_CASE("Environment information") {