diff --git a/Makefile.in b/Makefile.in
index 5d0e721..9d6e8d1 100644
--- a/Makefile.in
+++ b/Makefile.in
@@ -1,5 +1,5 @@
 #
-# Copyright (c) 2018-2019 Gavin D. Howard and contributors.
+# Copyright (c) 2018-2020 Gavin D. Howard and contributors.
 #
 # All rights reserved.
 #
diff --git a/configure.sh b/configure.sh
index 6bfab29..f5c11a4 100755
--- a/configure.sh
+++ b/configure.sh
@@ -1,6 +1,6 @@
 #! /bin/sh
 #
-# Copyright (c) 2018-2019 Gavin D. Howard and contributors.
+# Copyright (c) 2018-2020 Gavin D. Howard and contributors.
 #
 # All rights reserved.
 #
diff --git a/functions.sh b/functions.sh
index 8a81b8b..254e81c 100755
--- a/functions.sh
+++ b/functions.sh
@@ -1,6 +1,6 @@
 #! /bin/sh
 #
-# Copyright (c) 2018-2019 Gavin D. Howard and contributors.
+# Copyright (c) 2018-2020 Gavin D. Howard and contributors.
 #
 # All rights reserved.
 #
diff --git a/gen/bc_help.txt b/gen/bc_help.txt
index 8272246..648ed25 100644
--- a/gen/bc_help.txt
+++ b/gen/bc_help.txt
@@ -1,7 +1,7 @@
 /*
  * *****************************************************************************
  *
- * Copyright (c) 2018-2019 Gavin D. Howard and contributors.
+ * Copyright (c) 2018-2020 Gavin D. Howard and contributors.
  *
  * All rights reserved.
  *
diff --git a/gen/dc_help.txt b/gen/dc_help.txt
index be064d9..18e990d 100644
--- a/gen/dc_help.txt
+++ b/gen/dc_help.txt
@@ -1,7 +1,7 @@
 /*
  * *****************************************************************************
  *
- * Copyright (c) 2018-2019 Gavin D. Howard and contributors.
+ * Copyright (c) 2018-2020 Gavin D. Howard and contributors.
  *
  * All rights reserved.
  *
diff --git a/gen/lib.bc b/gen/lib.bc
index bdde8a7..8b60cb9 100644
--- a/gen/lib.bc
+++ b/gen/lib.bc
@@ -1,7 +1,7 @@
 /*
  * *****************************************************************************
  *
- * Copyright (c) 2018-2019 Gavin D. Howard and contributors.
+ * Copyright (c) 2018-2020 Gavin D. Howard and contributors.
  *
  * All rights reserved.
  *
diff --git a/gen/lib2.bc b/gen/lib2.bc
index 9665b92..3b86486 100644
--- a/gen/lib2.bc
+++ b/gen/lib2.bc
@@ -1,7 +1,7 @@
 /*
  * *****************************************************************************
  *
- * Copyright (c) 2018-2019 Gavin D. Howard and contributors.
+ * Copyright (c) 2018-2020 Gavin D. Howard and contributors.
  *
  * All rights reserved.
  *
diff --git a/gen/strgen.c b/gen/strgen.c
index bd7588c..d741c1a 100644
--- a/gen/strgen.c
+++ b/gen/strgen.c
@@ -1,7 +1,7 @@
 /*
  * *****************************************************************************
  *
- * Copyright (c) 2018-2019 Gavin D. Howard and contributors.
+ * Copyright (c) 2018-2020 Gavin D. Howard and contributors.
  *
  * All rights reserved.
  *
@@ -43,7 +43,7 @@
 #include <libgen.h>
 
 static const char* const bc_gen_header =
-	"// Copyright (c) 2018-2019 Gavin D. Howard and contributors.\n"
+	"// Copyright (c) 2018-2020 Gavin D. Howard and contributors.\n"
 	"// Licensed under the 2-clause BSD license.\n"
 	"// *** AUTOMATICALLY GENERATED FROM %s. DO NOT MODIFY. ***\n";
 
diff --git a/include/args.h b/include/args.h
index 0b696f4..aa6dede 100644
--- a/include/args.h
+++ b/include/args.h
@@ -1,7 +1,7 @@
 /*
  * *****************************************************************************
  *
- * Copyright (c) 2018-2019 Gavin D. Howard and contributors.
+ * Copyright (c) 2018-2020 Gavin D. Howard and contributors.
  *
  * All rights reserved.
  *
diff --git a/include/bc.h b/include/bc.h
index 62f2f56..51114e7 100644
--- a/include/bc.h
+++ b/include/bc.h
@@ -1,7 +1,7 @@
 /*
  * *****************************************************************************
  *
- * Copyright (c) 2018-2019 Gavin D. Howard and contributors.
+ * Copyright (c) 2018-2020 Gavin D. Howard and contributors.
  *
  * All rights reserved.
  *
diff --git a/include/dc.h b/include/dc.h
index 5424162..8d559f7 100644
--- a/include/dc.h
+++ b/include/dc.h
@@ -1,7 +1,7 @@
 /*
  * *****************************************************************************
  *
- * Copyright (c) 2018-2019 Gavin D. Howard and contributors.
+ * Copyright (c) 2018-2020 Gavin D. Howard and contributors.
  *
  * All rights reserved.
  *
diff --git a/include/history.h b/include/history.h
index e257ec7..6ef6498 100644
--- a/include/history.h
+++ b/include/history.h
@@ -1,7 +1,7 @@
 /*
  * *****************************************************************************
  *
- * Copyright (c) 2018-2019 Gavin D. Howard and contributors.
+ * Copyright (c) 2018-2020 Gavin D. Howard and contributors.
  *
  * All rights reserved.
  *
diff --git a/include/lang.h b/include/lang.h
index c327d1c..39252dc 100644
--- a/include/lang.h
+++ b/include/lang.h
@@ -1,7 +1,7 @@
 /*
  * *****************************************************************************
  *
- * Copyright (c) 2018-2019 Gavin D. Howard and contributors.
+ * Copyright (c) 2018-2020 Gavin D. Howard and contributors.
  *
  * All rights reserved.
  *
diff --git a/include/lex.h b/include/lex.h
index 9d8648b..43e6a45 100644
--- a/include/lex.h
+++ b/include/lex.h
@@ -1,7 +1,7 @@
 /*
  * *****************************************************************************
  *
- * Copyright (c) 2018-2019 Gavin D. Howard and contributors.
+ * Copyright (c) 2018-2020 Gavin D. Howard and contributors.
  *
  * All rights reserved.
  *
diff --git a/include/num.h b/include/num.h
index 00180fc..ed232ba 100644
--- a/include/num.h
+++ b/include/num.h
@@ -1,7 +1,7 @@
 /*
  * *****************************************************************************
  *
- * Copyright (c) 2018-2019 Gavin D. Howard and contributors.
+ * Copyright (c) 2018-2020 Gavin D. Howard and contributors.
  *
  * All rights reserved.
  *
diff --git a/include/parse.h b/include/parse.h
index 685f7ec..2c8da66 100644
--- a/include/parse.h
+++ b/include/parse.h
@@ -1,7 +1,7 @@
 /*
  * *****************************************************************************
  *
- * Copyright (c) 2018-2019 Gavin D. Howard and contributors.
+ * Copyright (c) 2018-2020 Gavin D. Howard and contributors.
  *
  * All rights reserved.
  *
diff --git a/include/program.h b/include/program.h
index 726fc8f..f070ea6 100644
--- a/include/program.h
+++ b/include/program.h
@@ -1,7 +1,7 @@
 /*
  * *****************************************************************************
  *
- * Copyright (c) 2018-2019 Gavin D. Howard and contributors.
+ * Copyright (c) 2018-2020 Gavin D. Howard and contributors.
  *
  * All rights reserved.
  *
diff --git a/include/read.h b/include/read.h
index 13adbf7..75bb4c5 100644
--- a/include/read.h
+++ b/include/read.h
@@ -1,7 +1,7 @@
 /*
  * *****************************************************************************
  *
- * Copyright (c) 2018-2019 Gavin D. Howard and contributors.
+ * Copyright (c) 2018-2020 Gavin D. Howard and contributors.
  *
  * All rights reserved.
  *
diff --git a/include/status.h b/include/status.h
index 874beba..a024585 100644
--- a/include/status.h
+++ b/include/status.h
@@ -1,7 +1,7 @@
 /*
  * *****************************************************************************
  *
- * Copyright (c) 2018-2019 Gavin D. Howard and contributors.
+ * Copyright (c) 2018-2020 Gavin D. Howard and contributors.
  *
  * All rights reserved.
  *
diff --git a/include/vector.h b/include/vector.h
index f9ec42d..8f3000e 100644
--- a/include/vector.h
+++ b/include/vector.h
@@ -1,7 +1,7 @@
 /*
  * *****************************************************************************
  *
- * Copyright (c) 2018-2019 Gavin D. Howard and contributors.
+ * Copyright (c) 2018-2020 Gavin D. Howard and contributors.
  *
  * All rights reserved.
  *
diff --git a/include/vm.h b/include/vm.h
index ad3e645..77c2954 100644
--- a/include/vm.h
+++ b/include/vm.h
@@ -1,7 +1,7 @@
 /*
  * *****************************************************************************
  *
- * Copyright (c) 2018-2019 Gavin D. Howard and contributors.
+ * Copyright (c) 2018-2020 Gavin D. Howard and contributors.
  *
  * All rights reserved.
  *
diff --git a/install.sh b/install.sh
index 4446cb7..15e6ba2 100755
--- a/install.sh
+++ b/install.sh
@@ -1,6 +1,6 @@
 #! /bin/sh
 #
-# Copyright (c) 2018-2019 Gavin D. Howard and contributors.
+# Copyright (c) 2018-2020 Gavin D. Howard and contributors.
 #
 # All rights reserved.
 #
diff --git a/karatsuba.py b/karatsuba.py
index 59644c4..9edcea6 100755
--- a/karatsuba.py
+++ b/karatsuba.py
@@ -1,6 +1,6 @@
 #! /usr/bin/python3 -B
 #
-# Copyright (c) 2018-2019 Gavin D. Howard and contributors.
+# Copyright (c) 2018-2020 Gavin D. Howard and contributors.
 #
 # All rights reserved.
 #
diff --git a/link.sh b/link.sh
index 2cf0a63..4d9b46c 100755
--- a/link.sh
+++ b/link.sh
@@ -1,6 +1,6 @@
 #! /bin/sh
 #
-# Copyright (c) 2018-2019 Gavin D. Howard and contributors.
+# Copyright (c) 2018-2020 Gavin D. Howard and contributors.
 #
 # All rights reserved.
 #
diff --git a/locale_install.sh b/locale_install.sh
index 3c46625..7727a15 100755
--- a/locale_install.sh
+++ b/locale_install.sh
@@ -1,6 +1,6 @@
 #! /bin/sh
 #
-# Copyright (c) 2018-2019 Gavin D. Howard and contributors.
+# Copyright (c) 2018-2020 Gavin D. Howard and contributors.
 #
 # All rights reserved.
 #
diff --git a/locale_uninstall.sh b/locale_uninstall.sh
index 49b0c38..5f2700f 100755
--- a/locale_uninstall.sh
+++ b/locale_uninstall.sh
@@ -1,6 +1,6 @@
 #! /bin/sh
 #
-# Copyright (c) 2018-2019 Gavin D. Howard and contributors.
+# Copyright (c) 2018-2020 Gavin D. Howard and contributors.
 #
 # All rights reserved.
 #
diff --git a/locales/en_US.msg b/locales/en_US.msg
index 895ffef..3f6840b 100644
--- a/locales/en_US.msg
+++ b/locales/en_US.msg
@@ -1,5 +1,5 @@
 $ $
-$ Copyright (c) 2018-2019 Gavin D. Howard and contributors.
+$ Copyright (c) 2018-2020 Gavin D. Howard and contributors.
 $ $
 $ All rights reserved.
 $ $
diff --git a/locales/fr_FR.ISO8859-1.msg b/locales/fr_FR.ISO8859-1.msg
index 01a7b26..9456c38 100644
--- a/locales/fr_FR.ISO8859-1.msg
+++ b/locales/fr_FR.ISO8859-1.msg
@@ -1,5 +1,5 @@
 $ $
-$ Copyright (c) 2018-2019 Gavin D. Howard and contributors.
+$ Copyright (c) 2018-2020 Gavin D. Howard and contributors.
 $ $
 $ All rights reserved.
 $ $
diff --git a/locales/fr_FR.UTF-8.msg b/locales/fr_FR.UTF-8.msg
index 01a7b26..9456c38 100644
--- a/locales/fr_FR.UTF-8.msg
+++ b/locales/fr_FR.UTF-8.msg
@@ -1,5 +1,5 @@
 $ $
-$ Copyright (c) 2018-2019 Gavin D. Howard and contributors.
+$ Copyright (c) 2018-2020 Gavin D. Howard and contributors.
 $ $
 $ All rights reserved.
 $ $
diff --git a/locales/pt_PT.ISO-8859-1.msg b/locales/pt_PT.ISO-8859-1.msg
index 9f2a34e..d856480 100644
--- a/locales/pt_PT.ISO-8859-1.msg
+++ b/locales/pt_PT.ISO-8859-1.msg
@@ -1,5 +1,5 @@
 $ $
-$ Copyright (c) 2018-2019 Gavin D. Howard and contributors.
+$ Copyright (c) 2018-2020 Gavin D. Howard and contributors.
 $ $
 $ All rights reserved.
 $ $
diff --git a/locales/pt_PT.UTF-8.msg b/locales/pt_PT.UTF-8.msg
index 9f2a34e..d856480 100644
--- a/locales/pt_PT.UTF-8.msg
+++ b/locales/pt_PT.UTF-8.msg
@@ -1,5 +1,5 @@
 $ $
-$ Copyright (c) 2018-2019 Gavin D. Howard and contributors.
+$ Copyright (c) 2018-2020 Gavin D. Howard and contributors.
 $ $
 $ All rights reserved.
 $ $
diff --git a/release.sh b/release.sh
index aa031a1..0a7c396 100755
--- a/release.sh
+++ b/release.sh
@@ -1,6 +1,6 @@
 #! /bin/sh
 #
-# Copyright (c) 2018-2019 Gavin D. Howard and contributors.
+# Copyright (c) 2018-2020 Gavin D. Howard and contributors.
 #
 # All rights reserved.
 #
diff --git a/src/args.c b/src/args.c
index a334955..225bb72 100644
--- a/src/args.c
+++ b/src/args.c
@@ -1,7 +1,7 @@
 /*
  * *****************************************************************************
  *
- * Copyright (c) 2018-2019 Gavin D. Howard and contributors.
+ * Copyright (c) 2018-2020 Gavin D. Howard and contributors.
  *
  * All rights reserved.
  *
diff --git a/src/bc/bc.c b/src/bc/bc.c
index d0604eb..dcf5b01 100644
--- a/src/bc/bc.c
+++ b/src/bc/bc.c
@@ -1,7 +1,7 @@
 /*
  * *****************************************************************************
  *
- * Copyright (c) 2018-2019 Gavin D. Howard and contributors.
+ * Copyright (c) 2018-2020 Gavin D. Howard and contributors.
  *
  * All rights reserved.
  *
diff --git a/src/bc/lex.c b/src/bc/lex.c
index a2e0b20..f907e22 100644
--- a/src/bc/lex.c
+++ b/src/bc/lex.c
@@ -1,7 +1,7 @@
 /*
  * *****************************************************************************
  *
- * Copyright (c) 2018-2019 Gavin D. Howard and contributors.
+ * Copyright (c) 2018-2020 Gavin D. Howard and contributors.
  *
  * All rights reserved.
  *
diff --git a/src/bc/parse.c b/src/bc/parse.c
index 9be35a3..75dabfc 100644
--- a/src/bc/parse.c
+++ b/src/bc/parse.c
@@ -1,7 +1,7 @@
 /*
  * *****************************************************************************
  *
- * Copyright (c) 2018-2019 Gavin D. Howard and contributors.
+ * Copyright (c) 2018-2020 Gavin D. Howard and contributors.
  *
  * All rights reserved.
  *
diff --git a/src/data.c b/src/data.c
index d2b53d5..63f2695 100644
--- a/src/data.c
+++ b/src/data.c
@@ -1,7 +1,7 @@
 /*
  * *****************************************************************************
  *
- * Copyright (c) 2018-2019 Gavin D. Howard and contributors.
+ * Copyright (c) 2018-2020 Gavin D. Howard and contributors.
  *
  * All rights reserved.
  *
@@ -52,7 +52,7 @@
 #endif // BC_ENABLE_SIGNALS
 
 const char bc_copyright[] =
-	"Copyright (c) 2018-2019 Gavin D. Howard and contributors\n"
+	"Copyright (c) 2018-2020 Gavin D. Howard and contributors\n"
 	"Report bugs at: https://github.com/gavinhoward/bc\n\n"
 	"This is free software with ABSOLUTELY NO WARRANTY.\n";
 
diff --git a/src/dc/dc.c b/src/dc/dc.c
index e64f6a0..ebcbf63 100644
--- a/src/dc/dc.c
+++ b/src/dc/dc.c
@@ -1,7 +1,7 @@
 /*
  * *****************************************************************************
  *
- * Copyright (c) 2018-2019 Gavin D. Howard and contributors.
+ * Copyright (c) 2018-2020 Gavin D. Howard and contributors.
  *
  * All rights reserved.
  *
diff --git a/src/dc/lex.c b/src/dc/lex.c
index 6b4ac58..bd1cb93 100644
--- a/src/dc/lex.c
+++ b/src/dc/lex.c
@@ -1,7 +1,7 @@
 /*
  * *****************************************************************************
  *
- * Copyright (c) 2018-2019 Gavin D. Howard and contributors.
+ * Copyright (c) 2018-2020 Gavin D. Howard and contributors.
  *
  * All rights reserved.
  *
diff --git a/src/dc/parse.c b/src/dc/parse.c
index fb5a404..e710c60 100644
--- a/src/dc/parse.c
+++ b/src/dc/parse.c
@@ -1,7 +1,7 @@
 /*
  * *****************************************************************************
  *
- * Copyright (c) 2018-2019 Gavin D. Howard and contributors.
+ * Copyright (c) 2018-2020 Gavin D. Howard and contributors.
  *
  * All rights reserved.
  *
diff --git a/src/history/history.c b/src/history/history.c
index 42372cb..12a8425 100644
--- a/src/history/history.c
+++ b/src/history/history.c
@@ -1,7 +1,7 @@
 /*
  * *****************************************************************************
  *
- * Copyright (c) 2018-2019 Gavin D. Howard and contributors.
+ * Copyright (c) 2018-2020 Gavin D. Howard and contributors.
  *
  * All rights reserved.
  *
diff --git a/src/lang.c b/src/lang.c
index 625cf48..c338919 100644
--- a/src/lang.c
+++ b/src/lang.c
@@ -1,7 +1,7 @@
 /*
  * *****************************************************************************
  *
- * Copyright (c) 2018-2019 Gavin D. Howard and contributors.
+ * Copyright (c) 2018-2020 Gavin D. Howard and contributors.
  *
  * All rights reserved.
  *
diff --git a/src/lex.c b/src/lex.c
index 281a176..98e2c62 100644
--- a/src/lex.c
+++ b/src/lex.c
@@ -1,7 +1,7 @@
 /*
  * *****************************************************************************
  *
- * Copyright (c) 2018-2019 Gavin D. Howard and contributors.
+ * Copyright (c) 2018-2020 Gavin D. Howard and contributors.
  *
  * All rights reserved.
  *
diff --git a/src/main.c b/src/main.c
index 27ab777..5ec7a73 100644
--- a/src/main.c
+++ b/src/main.c
@@ -1,7 +1,7 @@
 /*
  * *****************************************************************************
  *
- * Copyright (c) 2018-2019 Gavin D. Howard and contributors.
+ * Copyright (c) 2018-2020 Gavin D. Howard and contributors.
  *
  * All rights reserved.
  *
diff --git a/src/num.c b/src/num.c
index a558a62..86f4ede 100644
--- a/src/num.c
+++ b/src/num.c
@@ -1,7 +1,7 @@
 /*
  * *****************************************************************************
  *
- * Copyright (c) 2018-2019 Gavin D. Howard and contributors.
+ * Copyright (c) 2018-2020 Gavin D. Howard and contributors.
  *
  * All rights reserved.
  *
diff --git a/src/parse.c b/src/parse.c
index 2bff1e4..34e1a4d 100644
--- a/src/parse.c
+++ b/src/parse.c
@@ -1,7 +1,7 @@
 /*
  * *****************************************************************************
  *
- * Copyright (c) 2018-2019 Gavin D. Howard and contributors.
+ * Copyright (c) 2018-2020 Gavin D. Howard and contributors.
  *
  * All rights reserved.
  *
diff --git a/src/program.c b/src/program.c
index 2959370..a4b6604 100644
--- a/src/program.c
+++ b/src/program.c
@@ -1,7 +1,7 @@
 /*
  * *****************************************************************************
  *
- * Copyright (c) 2018-2019 Gavin D. Howard and contributors.
+ * Copyright (c) 2018-2020 Gavin D. Howard and contributors.
  *
  * All rights reserved.
  *
diff --git a/src/read.c b/src/read.c
index a60e3ea..273afcb 100644
--- a/src/read.c
+++ b/src/read.c
@@ -1,7 +1,7 @@
 /*
  * *****************************************************************************
  *
- * Copyright (c) 2018-2019 Gavin D. Howard and contributors.
+ * Copyright (c) 2018-2020 Gavin D. Howard and contributors.
  *
  * All rights reserved.
  *
diff --git a/src/vector.c b/src/vector.c
index 54cd612..a0c0e70 100644
--- a/src/vector.c
+++ b/src/vector.c
@@ -1,7 +1,7 @@
 /*
  * *****************************************************************************
  *
- * Copyright (c) 2018-2019 Gavin D. Howard and contributors.
+ * Copyright (c) 2018-2020 Gavin D. Howard and contributors.
  *
  * All rights reserved.
  *
diff --git a/src/vm.c b/src/vm.c
index 4a5507c..efbb290 100644
--- a/src/vm.c
+++ b/src/vm.c
@@ -1,7 +1,7 @@
 /*
  * *****************************************************************************
  *
- * Copyright (c) 2018-2019 Gavin D. Howard and contributors.
+ * Copyright (c) 2018-2020 Gavin D. Howard and contributors.
  *
  * All rights reserved.
  *
diff --git a/tests/afl.py b/tests/afl.py
index 5c7c946..3d81265 100755
--- a/tests/afl.py
+++ b/tests/afl.py
@@ -1,6 +1,6 @@
 #! /usr/bin/python3 -B
 #
-# Copyright (c) 2018-2019 Gavin D. Howard and contributors.
+# Copyright (c) 2018-2020 Gavin D. Howard and contributors.
 #
 # All rights reserved.
 #
diff --git a/tests/all.sh b/tests/all.sh
index 22e892f..08a306e 100755
--- a/tests/all.sh
+++ b/tests/all.sh
@@ -1,6 +1,6 @@
 #! /bin/sh
 #
-# Copyright (c) 2018-2019 Gavin D. Howard and contributors.
+# Copyright (c) 2018-2020 Gavin D. Howard and contributors.
 #
 # All rights reserved.
 #
diff --git a/tests/bc/timeconst.sh b/tests/bc/timeconst.sh
index 5f5600f..17e765d 100755
--- a/tests/bc/timeconst.sh
+++ b/tests/bc/timeconst.sh
@@ -1,6 +1,6 @@
 #! /bin/sh
 #
-# Copyright (c) 2018-2019 Gavin D. Howard and contributors.
+# Copyright (c) 2018-2020 Gavin D. Howard and contributors.
 #
 # All rights reserved.
 #
diff --git a/tests/errors.sh b/tests/errors.sh
index be87bf3..dd38b5d 100755
--- a/tests/errors.sh
+++ b/tests/errors.sh
@@ -1,6 +1,6 @@
 #! /bin/sh
 #
-# Copyright (c) 2018-2019 Gavin D. Howard and contributors.
+# Copyright (c) 2018-2020 Gavin D. Howard and contributors.
 #
 # All rights reserved.
 #
diff --git a/tests/randmath.py b/tests/randmath.py
index d20d94c..f350ef3 100755
--- a/tests/randmath.py
+++ b/tests/randmath.py
@@ -1,6 +1,6 @@
 #! /usr/bin/python3 -B
 #
-# Copyright (c) 2018-2019 Gavin D. Howard and contributors.
+# Copyright (c) 2018-2020 Gavin D. Howard and contributors.
 #
 # All rights reserved.
 #
diff --git a/tests/read.sh b/tests/read.sh
index 0f505df..6352912 100755
--- a/tests/read.sh
+++ b/tests/read.sh
@@ -1,6 +1,6 @@
 #! /bin/sh
 #
-# Copyright (c) 2018-2019 Gavin D. Howard and contributors.
+# Copyright (c) 2018-2020 Gavin D. Howard and contributors.
 #
 # All rights reserved.
 #
diff --git a/tests/script.sh b/tests/script.sh
index b1dbfe4..b8d3107 100755
--- a/tests/script.sh
+++ b/tests/script.sh
@@ -1,6 +1,6 @@
 #! /bin/sh
 #
-# Copyright (c) 2018-2019 Gavin D. Howard and contributors.
+# Copyright (c) 2018-2020 Gavin D. Howard and contributors.
 #
 # All rights reserved.
 #
diff --git a/tests/scripts.sh b/tests/scripts.sh
index f627638..00631c3 100755
--- a/tests/scripts.sh
+++ b/tests/scripts.sh
@@ -1,6 +1,6 @@
 #! /bin/sh
 #
-# Copyright (c) 2018-2019 Gavin D. Howard and contributors.
+# Copyright (c) 2018-2020 Gavin D. Howard and contributors.
 #
 # All rights reserved.
 #
diff --git a/tests/stdin.sh b/tests/stdin.sh
index 5d41e79..cfd4580 100755
--- a/tests/stdin.sh
+++ b/tests/stdin.sh
@@ -1,6 +1,6 @@
 #! /bin/sh
 #
-# Copyright (c) 2018-2019 Gavin D. Howard and contributors.
+# Copyright (c) 2018-2020 Gavin D. Howard and contributors.
 #
 # All rights reserved.
 #
diff --git a/tests/test.sh b/tests/test.sh
index 6c7a93b..8eb2134 100755
--- a/tests/test.sh
+++ b/tests/test.sh
@@ -1,6 +1,6 @@
 #! /bin/sh
 #
-# Copyright (c) 2018-2019 Gavin D. Howard and contributors.
+# Copyright (c) 2018-2020 Gavin D. Howard and contributors.
 #
 # All rights reserved.
 #