diff --git a/docs/querying/functions.md b/docs/querying/functions.md
index 94bd48632..d4236f0b8 100644
--- a/docs/querying/functions.md
+++ b/docs/querying/functions.md
@@ -411,8 +411,6 @@ expression is to be evaluated.
 `timestamp(v instant-vector)` returns the timestamp of each of the samples of
 the given vector as the number of seconds since January 1, 1970 UTC.
 
-*This function was added in Prometheus 2.0*
-
 ## `vector()`
 
 `vector(s scalar)` returns the scalar `s` as a vector with no labels.