diff --git a/common/lc_global.h b/common/lc_global.h
index 00da92ec..c042d933 100644
--- a/common/lc_global.h
+++ b/common/lc_global.h
@@ -59,10 +59,10 @@ typedef quint32 lcStep;
 #define LC_STEP_MAX 0xffffffff
 
 // Version number.
-#define LC_VERSION_MAJOR 25
+#define LC_VERSION_MAJOR 26
 #define LC_VERSION_MINOR 9
 #define LC_VERSION_PATCH 0
-#define LC_VERSION_TEXT "25.09"
+#define LC_VERSION_TEXT "26.09"
 
 // Forward declarations.
 class Project;
diff --git a/docs/leocad.1 b/docs/leocad.1
index 99dea1b1..59f9ea1d 100644
--- a/docs/leocad.1
+++ b/docs/leocad.1
@@ -1,4 +1,4 @@
-.TH LEOCAD 1 "1 September 2025"
+.TH LEOCAD 1 "18 September 2026"
 .\" NAME should be all caps, SECTION should be 1-8, maybe w/ subsection
 .\" other params are allowed: see man(7), man(1)
 .SH NAME
diff --git a/leocad.pro b/leocad.pro
index 4aa5a45e..c4a8f215 100644
--- a/leocad.pro
+++ b/leocad.pro
@@ -27,7 +27,7 @@ CONFIG += precompile_header incremental c++17 force_debug_info
 
 win32 {
 	RC_ICONS = resources/leocad.ico
-	VERSION = 25.9.0.0
+	VERSION = 26.9.0.0
 	QMAKE_TARGET_COMPANY = LeoCAD Software
 	QMAKE_TARGET_DESCRIPTION = LeoCAD
 	QMAKE_TARGET_COPYRIGHT = "Copyright (C) LeoCAD.org"
diff --git a/leocad.spec b/leocad.spec
index 367aee4e..1dcfc236 100644
--- a/leocad.spec
+++ b/leocad.spec
@@ -28,7 +28,7 @@ Group: Graphics
 %if 0%{?fedora} || 0%{?centos_version}
 Group: Amusements/Graphics
 %endif
-Version: 25.09
+Version: 26.09
 %if 0%{?opensuse_bs}
 Release: <CI_CNT>.<B_CNT>%{?dist}
 %else
@@ -290,4 +290,3 @@ rm -rf $RPM_BUILD_ROOT
 
 * Tue Sep 16 2016 - pbartfai (at) stardust.hu 0.90
 - Initial version
-
diff --git a/qt/Info.plist b/qt/Info.plist
index 0004db84..ab1b2e46 100644
--- a/qt/Info.plist
+++ b/qt/Info.plist
@@ -63,7 +63,7 @@
 	<key>CFBundleSignature</key>
 	<string>LCAD</string>
 	<key>CFBundleVersion</key>
-	<string>25.09.0</string>
+	<string>26.09.0</string>
 	<key>CFBundleDisplayName</key>
 	<string>LeoCAD</string>
 	<key>CFBundleName</key>
diff --git a/snapcraft.yaml b/snapcraft.yaml
index 2b2454e0..e3415159 100644
--- a/snapcraft.yaml
+++ b/snapcraft.yaml
@@ -1,7 +1,7 @@
 name: leocad
 base: core18
 adopt-info: leocad
-version: '25.09'
+version: '26.09'
 
 grade: stable
 confinement: strict
@@ -31,7 +31,7 @@ parts:
       - libqt5concurrent5
       - libqt5printsupport5
       - libqt5xml5
-    source: https://github.com/leozide/leocad/archive/v25.09.tar.gz
+    source: https://github.com/leozide/leocad/archive/v26.09.tar.gz
     parse-info: [usr/share/metainfo/leocad.appdata.xml]
   library:
     source: .
diff --git a/tools/setup/leocad.appdata.xml b/tools/setup/leocad.appdata.xml
index 95a71f4b..9f13797d 100644
--- a/tools/setup/leocad.appdata.xml
+++ b/tools/setup/leocad.appdata.xml
@@ -22,6 +22,7 @@
 		<id>leocad.desktop</id>
 	</provides>
 	<releases>
+		<release version="26.09" date="2026-09-18" />
 		<release version="25.09" date="2025-09-01" />
 		<release version="23.03" date="2023-03-19" />
 		<release version="21.06" date="2021-06-05" />