diff --git a/NEWS.md b/NEWS.md
index 87df2233..a99348ed 100644
--- a/NEWS.md
+++ b/NEWS.md
@@ -6,6 +6,7 @@
 
 ## MINOR FEATURES AND BUG FIXES
 
+- default values for some arguments in `explorespec()` and `sensmodel()` are now explicit in the function definition.
 - `as.rspec()` now works out of the box with `tibble`, rather than requiring users to pass a standard data.frame.
 
 ## INTERNAL CHANGES