diff --git a/Dockerfile.alpine b/Dockerfile.alpine
index a1e3cb9..6a62291 100644
--- a/Dockerfile.alpine
+++ b/Dockerfile.alpine
@@ -199,7 +199,7 @@ ENV HOME=/home/guiapp \
     GROUP_ID=1000 \
     APP_NAME=DockerApp \
     DISPLAY=:0 \
-    DISPLAY_WIDTH=1024 \
+    DISPLAY_WIDTH=1280 \
     DISPLAY_HEIGHT=768
 
 # Define mountable directories.
diff --git a/Dockerfile.alpine-glibc b/Dockerfile.alpine-glibc
index 5a2174c..cfcc06a 100644
--- a/Dockerfile.alpine-glibc
+++ b/Dockerfile.alpine-glibc
@@ -236,7 +236,7 @@ ENV HOME=/home/guiapp \
     GROUP_ID=1000 \
     APP_NAME=DockerApp \
     DISPLAY=:0 \
-    DISPLAY_WIDTH=1024 \
+    DISPLAY_WIDTH=1280 \
     DISPLAY_HEIGHT=768
 
 # Define mountable directories.
diff --git a/Dockerfile.debian b/Dockerfile.debian
index 37808af..bf5cd05 100644
--- a/Dockerfile.debian
+++ b/Dockerfile.debian
@@ -238,7 +238,7 @@ ENV HOME=/home/guiapp \
     GROUP_ID=1000 \
     APP_NAME=DockerApp \
     DISPLAY=:0 \
-    DISPLAY_WIDTH=1024 \
+    DISPLAY_WIDTH=1280 \
     DISPLAY_HEIGHT=768
 
 # Define mountable directories.