diff --git a/Misc/ACKS b/Misc/ACKS
index 877c326..3eb9c49 100644
--- a/Misc/ACKS
+++ b/Misc/ACKS
@@ -124,6 +124,7 @@
 Charles Cazabon
 Per Cederqvist
 Octavian Cerna
+Pascal Chambon
 Hye-Shik Chang
 Jeffrey Chang
 Mitch Chapman
diff --git a/Misc/NEWS b/Misc/NEWS
index fd99685..5f64b8a 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -50,6 +50,11 @@
 Library
 -------
 
+- Issue #6939: Fix file I/O objects in the `io` module to keep the original
+  file position when calling `truncate()`.  It would previously change the
+  file position to the given argument, which goes against the tradition of
+  ftruncate() and other truncation APIs.  Patch by Pascal Chambon.
+
 - UserDict is now a new-style class.
 
 - Issue #7610: Reworked implementation of the internal