diff --git a/src/HttpCommon.jl b/src/HttpCommon.jl
index 2312b5b..5ceb05e 100644
--- a/src/HttpCommon.jl
+++ b/src/HttpCommon.jl
@@ -125,7 +125,11 @@ const HttpMethodBitmaskToName = (HttpMethodBitmask => String)[v => k for (k, v)
 RFC1123_datetime(t::DateTime) = begin
     Dates.format(t, Dates.RFC1123Format) * " GMT"
 end
-RFC1123_datetime() = RFC1123_datetime(Dates.now(Dates.UTC))
+if VERSION < v"0.4-"
+    RFC1123_datetime() = RFC1123_datetime(Dates.nowutc())
+else
+    RFC1123_datetime() = RFC1123_datetime(Dates.now(Dates.UTC))
+end
 
 # HTTP Headers
 #