diff --git a/src/format/parse.rs b/src/format/parse.rs
index dcd71e6717..63d5e8fde1 100644
--- a/src/format/parse.rs
+++ b/src/format/parse.rs
@@ -545,7 +545,7 @@ where
                     }
 
                     &RFC2822 => try_consume!(parse_rfc2822(parsed, s)),
-                    &RFC3339 => try_consume!(parse_rfc3339(parsed, s)),
+                    &RFC3339 => try_consume!(parse_rfc3339_relaxed(parsed, s)),
                 }
             }