diff --git a/json_serialization.nimble b/json_serialization.nimble
index 685f038..02d0b3c 100644
--- a/json_serialization.nimble
+++ b/json_serialization.nimble
@@ -20,6 +20,7 @@ requires "nim >= 1.6.0",
          "serialization",
          "stew >= 0.2.0",
          "results"
+requires "https://github.com/nitely/nim-faststreams#b8737b832ac7a7bb44beffe6a56500ed85e9a93c"
 
 let nimc = getEnv("NIMC", "nim") # Which nim compiler to use
 let lang = getEnv("NIMLANG", "c") # Which backend (c/cpp/js)
diff --git a/json_serialization/writer.nim b/json_serialization/writer.nim
index 451f816..a6f3bc1 100644
--- a/json_serialization/writer.nim
+++ b/json_serialization/writer.nim
@@ -525,7 +525,7 @@ proc writeValue*[V: not void](w: var JsonWriter, value: V) {.raises: [IOError].}
       w.streamElement(s):
         # TODO Implement writeText for floats
         #      to avoid the allocation here:
-        s.write $value
+        s.writeText value
 
   elif value is seq or(value is distinct and distinctBase(value) is seq):
     autoSerializeCheck(Flavor, seq, typeof(value)):