diff --git a/wmlib/WMaker.h b/wmlib/WMaker.h
index 724b3265..28d96595 100644
--- a/wmlib/WMaker.h
+++ b/wmlib/WMaker.h
@@ -14,9 +14,8 @@
  *  Library General Public License for more details.
  *
  *  You should have received a copy of the GNU Library General Public
- *  License along with this library; if not, write to the Free
- *  Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
- *  MA 02110-1301, USA.
+ *  License along with this library; if not, see
+ *  <https://www.gnu.org/licenses/>.
  */
 
 #ifndef _WMLIB_H_
diff --git a/wmlib/app.c b/wmlib/app.c
index 9cd27c8c..2d24de90 100644
--- a/wmlib/app.c
+++ b/wmlib/app.c
@@ -15,9 +15,8 @@
  *  Library General Public License for more details.
  *
  *  You should have received a copy of the GNU Library General Public
- *  License along with this library; if not, write to the Free
- *  Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
- *  MA 02110-1301, USA.
+ *  License along with this library; if not, see
+ *  <https://www.gnu.org/licenses/>.
  */
 
 #include <X11/Xlib.h>
diff --git a/wmlib/app.h b/wmlib/app.h
index 4cac95c9..8f17c52a 100644
--- a/wmlib/app.h
+++ b/wmlib/app.h
@@ -15,9 +15,8 @@
  *  Library General Public License for more details.
  *
  *  You should have received a copy of the GNU Library General Public
- *  License along with this library; if not, write to the Free
- *  Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
- *  MA 02110-1301, USA.
+ *  License along with this library; if not, see
+ *  <https://www.gnu.org/licenses/>.
  */
 
 #ifndef _APP_H_
diff --git a/wmlib/command.c b/wmlib/command.c
index 70ec0f56..41080989 100644
--- a/wmlib/command.c
+++ b/wmlib/command.c
@@ -15,9 +15,8 @@
  *  Library General Public License for more details.
  *
  *  You should have received a copy of the GNU Library General Public
- *  License along with this library; if not, write to the Free
- *  Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
- *  MA 02110-1301, USA.
+ *  License along with this library; if not, see
+ *  <https://www.gnu.org/licenses/>.
  */
 
 #include <X11/Xlib.h>
diff --git a/wmlib/event.c b/wmlib/event.c
index ceb5ae9b..a3ffb89d 100644
--- a/wmlib/event.c
+++ b/wmlib/event.c
@@ -15,9 +15,8 @@
  *  Library General Public License for more details.
  *
  *  You should have received a copy of the GNU Library General Public
- *  License along with this library; if not, write to the Free
- *  Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
- *  MA 02110-1301, USA.
+ *  License along with this library; if not, see
+ *  <https://www.gnu.org/licenses/>.
  */
 
 #include <stdlib.h>
diff --git a/wmlib/menu.c b/wmlib/menu.c
index 6646cd70..47a692dc 100644
--- a/wmlib/menu.c
+++ b/wmlib/menu.c
@@ -15,9 +15,8 @@
  *  Library General Public License for more details.
  *
  *  You should have received a copy of the GNU Library General Public
- *  License along with this library; if not, write to the Free
- *  Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
- *  MA 02110-1301, USA.
+ *  License along with this library; if not, see
+ *  <https://www.gnu.org/licenses/>.
  */
 
 #include <stdlib.h>
diff --git a/wmlib/menu.h b/wmlib/menu.h
index a611a1a4..cd704112 100644
--- a/wmlib/menu.h
+++ b/wmlib/menu.h
@@ -15,9 +15,8 @@
  *  Library General Public License for more details.
  *
  *  You should have received a copy of the GNU Library General Public
- *  License along with this library; if not, write to the Free
- *  Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
- *  MA 02110-1301, USA.
+ *  License along with this library; if not, see
+ *  <https://www.gnu.org/licenses/>.
  */
 
 #ifndef _MENU_H_
diff --git a/wrlib/alpha_combine.c b/wrlib/alpha_combine.c
index 085aec55..d547051e 100644
--- a/wrlib/alpha_combine.c
+++ b/wrlib/alpha_combine.c
@@ -13,9 +13,8 @@
  *  Library General Public License for more details.
  *
  *  You should have received a copy of the GNU Library General Public
- *  License along with this library; if not, write to the Free
- *  Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
- *  MA 02110-1301, USA.
+ *  License along with this library; if not, see
+ *  <https://www.gnu.org/licenses/>.
  */
 
 #include "config.h"
diff --git a/wrlib/color.c b/wrlib/color.c
index 3403e898..7b43e403 100644
--- a/wrlib/color.c
+++ b/wrlib/color.c
@@ -15,9 +15,8 @@
  *  Library General Public License for more details.
  *
  *  You should have received a copy of the GNU Library General Public
- *  License along with this library; if not, write to the Free
- *  Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
- *  MA 02110-1301, USA.
+ *  License along with this library; if not, see
+ *  <https://www.gnu.org/licenses/>.
  */
 
 #include <config.h>
diff --git a/wrlib/context.c b/wrlib/context.c
index 6bc4c85a..570f0ca5 100644
--- a/wrlib/context.c
+++ b/wrlib/context.c
@@ -15,9 +15,8 @@
  *  Library General Public License for more details.
  *
  *  You should have received a copy of the GNU Library General Public
- *  License along with this library; if not, write to the Free
- *  Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
- *  MA 02110-1301, USA.
+ *  License along with this library; if not, see
+ *  <https://www.gnu.org/licenses/>.
  */
 
 #include <config.h>
diff --git a/wrlib/convert.c b/wrlib/convert.c
index 400234f0..ec90c2ba 100644
--- a/wrlib/convert.c
+++ b/wrlib/convert.c
@@ -15,9 +15,8 @@
  *  Library General Public License for more details.
  *
  *  You should have received a copy of the GNU Library General Public
- *  License along with this library; if not, write to the Free
- *  Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
- *  MA 02110-1301, USA.
+ *  License along with this library; if not, see
+ *  <https://www.gnu.org/licenses/>.
  */
 
 /* Problems:
diff --git a/wrlib/convert.h b/wrlib/convert.h
index a3045e01..c529f5c3 100644
--- a/wrlib/convert.h
+++ b/wrlib/convert.h
@@ -14,9 +14,8 @@
  *  Library General Public License for more details.
  *
  *  You should have received a copy of the GNU Library General Public
- *  License along with this library; if not, write to the Free
- *  Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
- *  MA 02110-1301, USA.
+ *  License along with this library; if not, see
+ *  <https://www.gnu.org/licenses/>.
  */
 
 /*
diff --git a/wrlib/convolve.c b/wrlib/convolve.c
index 8873a620..997d26f4 100644
--- a/wrlib/convolve.c
+++ b/wrlib/convolve.c
@@ -14,9 +14,8 @@
  *  Library General Public License for more details.
  *
  *  You should have received a copy of the GNU Library General Public
- *  License along with this library; if not, write to the Free
- *  Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
- *  MA 02110-1301, USA.
+ *  License along with this library; if not, see
+ *  <https://www.gnu.org/licenses/>.
  */
 
 #include <config.h>
diff --git a/wrlib/draw.c b/wrlib/draw.c
index 49992600..319fd052 100644
--- a/wrlib/draw.c
+++ b/wrlib/draw.c
@@ -16,9 +16,8 @@
  *  Library General Public License for more details.
  *
  *  You should have received a copy of the GNU Library General Public
- *  License along with this library; if not, write to the Free
- *  Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
- *  MA 02110-1301, USA.
+ *  License along with this library; if not, see
+ *  <https://www.gnu.org/licenses/>.
  */
 
 #include <config.h>
diff --git a/wrlib/flip.c b/wrlib/flip.c
index 13b10961..64c08cd4 100644
--- a/wrlib/flip.c
+++ b/wrlib/flip.c
@@ -15,9 +15,8 @@
  *  Library General Public License for more details.
  *
  *  You should have received a copy of the GNU Library General Public
- *  License along with this library; if not, write to the Free
- *  Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
- *  MA 02110-1301, USA.
+ *  License along with this library; if not, see
+ *  <https://www.gnu.org/licenses/>.
  */
 
 #include "config.h"
diff --git a/wrlib/gradient.c b/wrlib/gradient.c
index 84db1ce0..51c973df 100644
--- a/wrlib/gradient.c
+++ b/wrlib/gradient.c
@@ -16,9 +16,8 @@
  *  Library General Public License for more details.
  *
  *  You should have received a copy of the GNU Library General Public
- *  License along with this library; if not, write to the Free
- *  Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
- *  MA 02110-1301, USA.
+ *  License along with this library; if not, see
+ *  <https://www.gnu.org/licenses/>.
  */
 
 #include <config.h>
diff --git a/wrlib/imgformat.h b/wrlib/imgformat.h
index a903bc3f..66e93cb6 100644
--- a/wrlib/imgformat.h
+++ b/wrlib/imgformat.h
@@ -14,9 +14,8 @@
  *  Library General Public License for more details.
  *
  *  You should have received a copy of the GNU Library General Public
- *  License along with this library; if not, write to the Free
- *  Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
- *  MA 02110-1301, USA.
+ *  License along with this library; if not, see
+ *  <https://www.gnu.org/licenses/>.
  */
 
 /*
diff --git a/wrlib/load.c b/wrlib/load.c
index 0f824201..a1399756 100644
--- a/wrlib/load.c
+++ b/wrlib/load.c
@@ -16,9 +16,8 @@
  *  Library General Public License for more details.
  *
  *  You should have received a copy of the GNU Library General Public
- *  License along with this library; if not, write to the Free
- *  Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
- *  MA 02110-1301, USA.
+ *  License along with this library; if not, see
+ *  <https://www.gnu.org/licenses/>.
  */
 
 #include <config.h>
diff --git a/wrlib/load_gif.c b/wrlib/load_gif.c
index 5921735f..f3333c16 100644
--- a/wrlib/load_gif.c
+++ b/wrlib/load_gif.c
@@ -15,9 +15,8 @@
  *  Library General Public License for more details.
  *
  *  You should have received a copy of the GNU Library General Public
- *  License along with this library; if not, write to the Free
- *  Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
- *  MA 02110-1301, USA.
+ *  License along with this library; if not, see
+ *  <https://www.gnu.org/licenses/>.
  */
 
 #include <config.h>
diff --git a/wrlib/load_jpeg.c b/wrlib/load_jpeg.c
index 9c2ef6be..fda1583b 100644
--- a/wrlib/load_jpeg.c
+++ b/wrlib/load_jpeg.c
@@ -15,9 +15,8 @@
  *  Library General Public License for more details.
  *
  *  You should have received a copy of the GNU Library General Public
- *  License along with this library; if not, write to the Free
- *  Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
- *  MA 02110-1301, USA.
+ *  License along with this library; if not, see
+ *  <https://www.gnu.org/licenses/>.
  */
 
 #include <config.h>
diff --git a/wrlib/load_jxl.c b/wrlib/load_jxl.c
index c62ad49e..e0a818ec 100644
--- a/wrlib/load_jxl.c
+++ b/wrlib/load_jxl.c
@@ -15,9 +15,8 @@
  *  Library General Public License for more details.
  *
  *  You should have received a copy of the GNU Library General Public
- *  License along with this library; if not, write to the Free
- *  Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
- *  MA 02110-1301, USA.
+ *  License along with this library; if not, see
+ *  <https://www.gnu.org/licenses/>.
  */
 
 #include <config.h>
diff --git a/wrlib/load_magick.c b/wrlib/load_magick.c
index 5602d64d..60502b3b 100644
--- a/wrlib/load_magick.c
+++ b/wrlib/load_magick.c
@@ -15,9 +15,8 @@
  *  Library General Public License for more details.
  *
  *  You should have received a copy of the GNU Library General Public
- *  License along with this library; if not, write to the Free
- *  Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
- *  MA 02110-1301, USA.
+ *  License along with this library; if not, see
+ *  <https://www.gnu.org/licenses/>.
  */
 
 #include "config.h"
diff --git a/wrlib/load_png.c b/wrlib/load_png.c
index 50135b51..01d5c255 100644
--- a/wrlib/load_png.c
+++ b/wrlib/load_png.c
@@ -15,9 +15,8 @@
  *  Library General Public License for more details.
  *
  *  You should have received a copy of the GNU Library General Public
- *  License along with this library; if not, write to the Free
- *  Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
- *  MA 02110-1301, USA.
+ *  License along with this library; if not, see
+ *  <https://www.gnu.org/licenses/>.
  */
 
 #include <config.h>
diff --git a/wrlib/load_ppm.c b/wrlib/load_ppm.c
index 2f01c8ad..17e3daeb 100644
--- a/wrlib/load_ppm.c
+++ b/wrlib/load_ppm.c
@@ -16,9 +16,8 @@
  *  Library General Public License for more details.
  *
  *  You should have received a copy of the GNU Library General Public
- *  License along with this library; if not, write to the Free
- *  Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
- *  MA 02110-1301, USA.
+ *  License along with this library; if not, see
+ *  <https://www.gnu.org/licenses/>.
  */
 
 #include <config.h>
diff --git a/wrlib/load_tiff.c b/wrlib/load_tiff.c
index 8e86baa1..5b4de7de 100644
--- a/wrlib/load_tiff.c
+++ b/wrlib/load_tiff.c
@@ -15,9 +15,8 @@
  *  Library General Public License for more details.
  *
  *  You should have received a copy of the GNU Library General Public
- *  License along with this library; if not, write to the Free
- *  Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
- *  MA 02110-1301, USA.
+ *  License along with this library; if not, see
+ *  <https://www.gnu.org/licenses/>.
  */
 
 #include <config.h>
diff --git a/wrlib/load_webp.c b/wrlib/load_webp.c
index e1a4ee31..18b00579 100644
--- a/wrlib/load_webp.c
+++ b/wrlib/load_webp.c
@@ -15,9 +15,8 @@
  *  Library General Public License for more details.
  *
  *  You should have received a copy of the GNU Library General Public
- *  License along with this library; if not, write to the Free
- *  Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
- *  MA 02110-1301, USA.
+ *  License along with this library; if not, see
+ *  <https://www.gnu.org/licenses/>.
  */
 
 #include "config.h"
diff --git a/wrlib/load_xpm.c b/wrlib/load_xpm.c
index 54697acf..6f8a971e 100644
--- a/wrlib/load_xpm.c
+++ b/wrlib/load_xpm.c
@@ -16,9 +16,8 @@
  *  Library General Public License for more details.
  *
  *  You should have received a copy of the GNU Library General Public
- *  License along with this library; if not, write to the Free
- *  Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
- *  MA 02110-1301, USA.
+ *  License along with this library; if not, see
+ *  <https://www.gnu.org/licenses/>.
  */
 
 #include <config.h>
diff --git a/wrlib/load_xpm_normalized.c b/wrlib/load_xpm_normalized.c
index 82be3c4e..74b16a10 100644
--- a/wrlib/load_xpm_normalized.c
+++ b/wrlib/load_xpm_normalized.c
@@ -15,9 +15,8 @@
  *  Library General Public License for more details.
  *
  *  You should have received a copy of the GNU Library General Public
- *  License along with this library; if not, write to the Free
- *  Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
- *  MA 02110-1301, USA.
+ *  License along with this library; if not, see
+ *  <https://www.gnu.org/licenses/>.
  */
 
 #include <config.h>
diff --git a/wrlib/misc.c b/wrlib/misc.c
index 922c73d6..5eacd72b 100644
--- a/wrlib/misc.c
+++ b/wrlib/misc.c
@@ -14,9 +14,8 @@
  *  Library General Public License for more details.
  *
  *  You should have received a copy of the GNU Library General Public
- *  License along with this library; if not, write to the Free
- *  Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
- *  MA 02110-1301, USA.
+ *  License along with this library; if not, see
+ *  <https://www.gnu.org/licenses/>.
  */
 #include <config.h>
 
diff --git a/wrlib/raster.c b/wrlib/raster.c
index 0f8fdd11..48c28704 100644
--- a/wrlib/raster.c
+++ b/wrlib/raster.c
@@ -15,9 +15,8 @@
  *  Library General Public License for more details.
  *
  *  You should have received a copy of the GNU Library General Public
- *  License along with this library; if not, write to the Free
- *  Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
- *  MA 02110-1301, USA.
+ *  License along with this library; if not, see
+ *  <https://www.gnu.org/licenses/>.
  */
 
 #include <config.h>
diff --git a/wrlib/rotate.c b/wrlib/rotate.c
index 12cd41fd..41d7fee3 100644
--- a/wrlib/rotate.c
+++ b/wrlib/rotate.c
@@ -15,9 +15,8 @@
  *  Library General Public License for more details.
  *
  *  You should have received a copy of the GNU Library General Public
- *  License along with this library; if not, write to the Free
- *  Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
- *  MA 02110-1301, USA.
+ *  License along with this library; if not, see
+ *  <https://www.gnu.org/licenses/>.
  */
 
 #include <config.h>
diff --git a/wrlib/save.c b/wrlib/save.c
index 840f002d..62fe6c12 100644
--- a/wrlib/save.c
+++ b/wrlib/save.c
@@ -16,9 +16,8 @@
  *  Library General Public License for more details.
  *
  *  You should have received a copy of the GNU Library General Public
- *  License along with this library; if not, write to the Free
- *  Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
- *  MA 02110-1301, USA.
+ *  License along with this library; if not, see
+ *  <https://www.gnu.org/licenses/>.
  */
 
 #include <config.h>
diff --git a/wrlib/save_jpeg.c b/wrlib/save_jpeg.c
index 33a6d178..71ea78e2 100644
--- a/wrlib/save_jpeg.c
+++ b/wrlib/save_jpeg.c
@@ -15,9 +15,8 @@
  *  Library General Public License for more details.
  *
  *  You should have received a copy of the GNU Library General Public
- *  License along with this library; if not, write to the Free
- *  Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
- *  MA 02110-1301, USA.
+ *  License along with this library; if not, see
+ *  <https://www.gnu.org/licenses/>.
  */
 
 #include <config.h>
diff --git a/wrlib/save_png.c b/wrlib/save_png.c
index c8504118..31a59057 100644
--- a/wrlib/save_png.c
+++ b/wrlib/save_png.c
@@ -15,9 +15,8 @@
  *  Library General Public License for more details.
  *
  *  You should have received a copy of the GNU Library General Public
- *  License along with this library; if not, write to the Free
- *  Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
- *  MA 02110-1301, USA.
+ *  License along with this library; if not, see
+ *  <https://www.gnu.org/licenses/>.
  */
 
 #include <config.h>
diff --git a/wrlib/save_xpm.c b/wrlib/save_xpm.c
index 243f9506..6c832eb3 100644
--- a/wrlib/save_xpm.c
+++ b/wrlib/save_xpm.c
@@ -15,9 +15,8 @@
  *  Library General Public License for more details.
  *
  *  You should have received a copy of the GNU Library General Public
- *  License along with this library; if not, write to the Free
- *  Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
- *  MA 02110-1301, USA.
+ *  License along with this library; if not, see
+ *  <https://www.gnu.org/licenses/>.
  */
 
 #include <config.h>
diff --git a/wrlib/scale.c b/wrlib/scale.c
index da715ea5..c5f55b91 100644
--- a/wrlib/scale.c
+++ b/wrlib/scale.c
@@ -15,9 +15,8 @@
  *  Library General Public License for more details.
  *
  *  You should have received a copy of the GNU Library General Public
- *  License along with this library; if not, write to the Free
- *  Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
- *  MA 02110-1301, USA.
+ *  License along with this library; if not, see
+ *  <https://www.gnu.org/licenses/>.
  */
 
 #include <config.h>
diff --git a/wrlib/wraster.h.in b/wrlib/wraster.h.in
index e197c8d7..e3844a1a 100644
--- a/wrlib/wraster.h.in
+++ b/wrlib/wraster.h.in
@@ -14,9 +14,8 @@
  *  Library General Public License for more details.
  *
  *  You should have received a copy of the GNU Library General Public
- *  License along with this library; if not, write to the Free
- *  Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
- *  MA 02110-1301, USA.
+ *  License along with this library; if not, see
+ *  <https://www.gnu.org/licenses/>.
  */
 
 /*
diff --git a/wrlib/xpixmap.c b/wrlib/xpixmap.c
index 9cb95257..736f6cfa 100644
--- a/wrlib/xpixmap.c
+++ b/wrlib/xpixmap.c
@@ -15,9 +15,8 @@
  *  Library General Public License for more details.
  *
  *  You should have received a copy of the GNU Library General Public
- *  License along with this library; if not, write to the Free
- *  Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
- *  MA 02110-1301, USA.
+ *  License along with this library; if not, see
+ *  <https://www.gnu.org/licenses/>.
  */
 
 #include <config.h>
diff --git a/wrlib/xutil.c b/wrlib/xutil.c
index c1fbfeef..2d493419 100644
--- a/wrlib/xutil.c
+++ b/wrlib/xutil.c
@@ -15,9 +15,8 @@
  *  Library General Public License for more details.
  *
  *  You should have received a copy of the GNU Library General Public
- *  License along with this library; if not, write to the Free
- *  Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
- *  MA 02110-1301, USA.
+ *  License along with this library; if not, see
+ *  <https://www.gnu.org/licenses/>.
  */
 
 #include <config.h>