diff --git a/exwm-floating.el b/exwm-floating.el
index c4e29de..34d06a3 100644
--- a/exwm-floating.el
+++ b/exwm-floating.el
@@ -31,7 +31,6 @@
 
 (defgroup exwm-floating nil
   "Floating."
-  :version "25.3"
   :group 'exwm)
 
 (defcustom exwm-floating-setup-hook nil
diff --git a/exwm-input.el b/exwm-input.el
index b4d6d28..835705f 100644
--- a/exwm-input.el
+++ b/exwm-input.el
@@ -40,7 +40,6 @@
 
 (defgroup exwm-input nil
   "Input."
-  :version "25.3"
   :group 'exwm)
 
 (defcustom exwm-input-prefix-keys
diff --git a/exwm-layout.el b/exwm-layout.el
index 91764ad..47ccf5c 100644
--- a/exwm-layout.el
+++ b/exwm-layout.el
@@ -29,7 +29,6 @@
 
 (defgroup exwm-layout nil
   "Layout."
-  :version "25.3"
   :group 'exwm)
 
 (defcustom exwm-layout-auto-iconify t
diff --git a/exwm-manage.el b/exwm-manage.el
index 7c7ad39..fa73a8f 100644
--- a/exwm-manage.el
+++ b/exwm-manage.el
@@ -30,7 +30,6 @@
 
 (defgroup exwm-manage nil
   "Manage."
-  :version "25.3"
   :group 'exwm)
 
 (defcustom exwm-manage-finish-hook nil
diff --git a/exwm-randr.el b/exwm-randr.el
index e98074f..7f0e505 100644
--- a/exwm-randr.el
+++ b/exwm-randr.el
@@ -56,7 +56,6 @@
 
 (defgroup exwm-randr nil
   "RandR."
-  :version "25.3"
   :group 'exwm)
 
 (defcustom exwm-randr-refresh-hook nil
diff --git a/exwm-systemtray.el b/exwm-systemtray.el
index 441da95..9e57dae 100644
--- a/exwm-systemtray.el
+++ b/exwm-systemtray.el
@@ -57,7 +57,6 @@
 
 (defgroup exwm-systemtray nil
   "System tray."
-  :version "25.3"
   :group 'exwm)
 
 (defcustom exwm-systemtray-height nil
diff --git a/exwm-workspace.el b/exwm-workspace.el
index 472b2c2..89be697 100644
--- a/exwm-workspace.el
+++ b/exwm-workspace.el
@@ -31,7 +31,6 @@
 
 (defgroup exwm-workspace nil
   "Workspace."
-  :version "25.3"
   :group 'exwm)
 
 (defcustom exwm-workspace-switch-hook nil
diff --git a/exwm.el b/exwm.el
index 92591d4..a80232d 100644
--- a/exwm.el
+++ b/exwm.el
@@ -79,7 +79,6 @@
 (defgroup exwm nil
   "Emacs X Window Manager."
   :tag "EXWM"
-  :version "25.3"
   :group 'applications
   :prefix "exwm-")