diff --git a/ReleaseNotes.md b/ReleaseNotes.md
index 16432101..712d0c9d 100644
--- a/ReleaseNotes.md
+++ b/ReleaseNotes.md
@@ -1,6 +1,9 @@
 # Release Notes—NJOY21
 Given here are some release notes for NJOY21. Each release is made through a formal [Pull Request](https://github.com/njoy/NJOY21/pulls) made on GitHub. There are links in this document that point to each of those Pull Requests, where you can see in great details the changes that were made. Often the Pull Requests are made in response to an [issue](https://github.com/njoy/NJOY21/issues). In such cases, links to those issues are also given.
 
+## [NJOY21 1.1.0](https://github.com/njoy/NJOY21/pull/104)
+This update moves the C++ standard to C++17; thus, a c++17-compliant compiler is needed to build NJOY21. Fortunately, C++17-compliant compilers have been available for several years.
+
 ## [NJOY21 1.0.7](https://github.com/njoy/NJOY21/pull/101)
 This update fixes a bug in the error checking for ACER. This bug was fixed in lipservice:
 
diff --git a/dependencies/ENDFtk b/dependencies/ENDFtk
index f9e6caa2..f42641b4 160000
--- a/dependencies/ENDFtk
+++ b/dependencies/ENDFtk
@@ -1 +1 @@
-Subproject commit f9e6caa2be019ff3e5342ac36b7a1df0853bedee
+Subproject commit f42641b45cf4ba332fc8434e31c712fee2841dc2