diff --git a/Objects/fileobject.c b/Objects/fileobject.c
index ce18cb3..47461f9 100644
--- a/Objects/fileobject.c
+++ b/Objects/fileobject.c
@@ -1,5 +1,5 @@
 /***********************************************************
-Copyright 1991 by Stichting Mathematisch Centrum, Amsterdam, The
+Copyright 1991, 1992 by Stichting Mathematisch Centrum, Amsterdam, The
 Netherlands.
 
                         All Rights Reserved
diff --git a/Objects/floatobject.c b/Objects/floatobject.c
index dba6681..d154cab 100644
--- a/Objects/floatobject.c
+++ b/Objects/floatobject.c
@@ -1,5 +1,5 @@
 /***********************************************************
-Copyright 1991 by Stichting Mathematisch Centrum, Amsterdam, The
+Copyright 1991, 1992 by Stichting Mathematisch Centrum, Amsterdam, The
 Netherlands.
 
                         All Rights Reserved
diff --git a/Objects/frameobject.c b/Objects/frameobject.c
index 212fbc9..a68704c 100644
--- a/Objects/frameobject.c
+++ b/Objects/frameobject.c
@@ -1,5 +1,5 @@
 /***********************************************************
-Copyright 1991 by Stichting Mathematisch Centrum, Amsterdam, The
+Copyright 1991, 1992 by Stichting Mathematisch Centrum, Amsterdam, The
 Netherlands.
 
                         All Rights Reserved
diff --git a/Objects/funcobject.c b/Objects/funcobject.c
index d522d70..a779ebb 100644
--- a/Objects/funcobject.c
+++ b/Objects/funcobject.c
@@ -1,5 +1,5 @@
 /***********************************************************
-Copyright 1991 by Stichting Mathematisch Centrum, Amsterdam, The
+Copyright 1991, 1992 by Stichting Mathematisch Centrum, Amsterdam, The
 Netherlands.
 
                         All Rights Reserved
diff --git a/Objects/intobject.c b/Objects/intobject.c
index 4c56bda..8ecffc2 100644
--- a/Objects/intobject.c
+++ b/Objects/intobject.c
@@ -1,5 +1,5 @@
 /***********************************************************
-Copyright 1991 by Stichting Mathematisch Centrum, Amsterdam, The
+Copyright 1991, 1992 by Stichting Mathematisch Centrum, Amsterdam, The
 Netherlands.
 
                         All Rights Reserved
diff --git a/Objects/listobject.c b/Objects/listobject.c
index 156cda1..6992a0f 100644
--- a/Objects/listobject.c
+++ b/Objects/listobject.c
@@ -1,5 +1,5 @@
 /***********************************************************
-Copyright 1991 by Stichting Mathematisch Centrum, Amsterdam, The
+Copyright 1991, 1992 by Stichting Mathematisch Centrum, Amsterdam, The
 Netherlands.
 
                         All Rights Reserved
diff --git a/Objects/longobject.c b/Objects/longobject.c
index 4acbe0c..bf62c1f 100644
--- a/Objects/longobject.c
+++ b/Objects/longobject.c
@@ -1,5 +1,5 @@
 /***********************************************************
-Copyright 1991 by Stichting Mathematisch Centrum, Amsterdam, The
+Copyright 1991, 1992 by Stichting Mathematisch Centrum, Amsterdam, The
 Netherlands.
 
                         All Rights Reserved
diff --git a/Objects/methodobject.c b/Objects/methodobject.c
index f6777ea..3b7c016 100644
--- a/Objects/methodobject.c
+++ b/Objects/methodobject.c
@@ -1,5 +1,5 @@
 /***********************************************************
-Copyright 1991 by Stichting Mathematisch Centrum, Amsterdam, The
+Copyright 1991, 1992 by Stichting Mathematisch Centrum, Amsterdam, The
 Netherlands.
 
                         All Rights Reserved
diff --git a/Objects/moduleobject.c b/Objects/moduleobject.c
index b8a7213..bbe927c 100644
--- a/Objects/moduleobject.c
+++ b/Objects/moduleobject.c
@@ -1,5 +1,5 @@
 /***********************************************************
-Copyright 1991 by Stichting Mathematisch Centrum, Amsterdam, The
+Copyright 1991, 1992 by Stichting Mathematisch Centrum, Amsterdam, The
 Netherlands.
 
                         All Rights Reserved
diff --git a/Objects/object.c b/Objects/object.c
index 3b0b7d3..5f54b36 100644
--- a/Objects/object.c
+++ b/Objects/object.c
@@ -1,5 +1,5 @@
 /***********************************************************
-Copyright 1991 by Stichting Mathematisch Centrum, Amsterdam, The
+Copyright 1991, 1992 by Stichting Mathematisch Centrum, Amsterdam, The
 Netherlands.
 
                         All Rights Reserved
diff --git a/Objects/stringobject.c b/Objects/stringobject.c
index ca7bac6..b494f96 100644
--- a/Objects/stringobject.c
+++ b/Objects/stringobject.c
@@ -1,5 +1,5 @@
 /***********************************************************
-Copyright 1991 by Stichting Mathematisch Centrum, Amsterdam, The
+Copyright 1991, 1992 by Stichting Mathematisch Centrum, Amsterdam, The
 Netherlands.
 
                         All Rights Reserved
diff --git a/Objects/tupleobject.c b/Objects/tupleobject.c
index ab2cf18..0875a0c 100644
--- a/Objects/tupleobject.c
+++ b/Objects/tupleobject.c
@@ -1,5 +1,5 @@
 /***********************************************************
-Copyright 1991 by Stichting Mathematisch Centrum, Amsterdam, The
+Copyright 1991, 1992 by Stichting Mathematisch Centrum, Amsterdam, The
 Netherlands.
 
                         All Rights Reserved
diff --git a/Objects/typeobject.c b/Objects/typeobject.c
index 7ad43b3..e72f34c 100644
--- a/Objects/typeobject.c
+++ b/Objects/typeobject.c
@@ -1,5 +1,5 @@
 /***********************************************************
-Copyright 1991 by Stichting Mathematisch Centrum, Amsterdam, The
+Copyright 1991, 1992 by Stichting Mathematisch Centrum, Amsterdam, The
 Netherlands.
 
                         All Rights Reserved