diff --git a/src/crystallization/EnvironmentSimilarity.cpp b/src/crystallization/EnvironmentSimilarity.cpp
index 37fb1a110e..d49f7f0da6 100644
--- a/src/crystallization/EnvironmentSimilarity.cpp
+++ b/src/crystallization/EnvironmentSimilarity.cpp
@@ -1,5 +1,5 @@
 /* +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
-   Copyright (c) 2012-2019 The plumed team
+   Copyright (c) 2020 The plumed team
    (see the PEOPLE file at the root of the distribution for a list of names)
 
    See http://www.plumed.org for more information.