diff --git a/app/igneum-app/Cargo.lock b/app/igneum-app/Cargo.lock
index 7ba4e396..066104b4 100644
--- a/app/igneum-app/Cargo.lock
+++ b/app/igneum-app/Cargo.lock
@@ -219,7 +219,7 @@ dependencies = [
 
 [[package]]
 name = "igneum-app"
-version = "0.3.19"
+version = "0.3.20"
 dependencies = [
  "ed25519-dalek",
  "getrandom",
diff --git a/app/igneum-app/Cargo.toml b/app/igneum-app/Cargo.toml
index 2d10ec4a..cd05d672 100644
--- a/app/igneum-app/Cargo.toml
+++ b/app/igneum-app/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "igneum-app"
-version = "0.3.19"
+version = "0.3.20"
 edition = "2021"
 description = "Igneum Miner engine: supervises the node, the miner and the GPU workers, and serves the dashboard on 127.0.0.1"
 license = "MIT"
diff --git a/app/igneum-app/resources/igneum-app.rc b/app/igneum-app/resources/igneum-app.rc
index d20b86ca..f2c494bd 100644
--- a/app/igneum-app/resources/igneum-app.rc
+++ b/app/igneum-app/resources/igneum-app.rc
@@ -6,8 +6,8 @@
 1 ICON "igneum.ico"
 
 1 VERSIONINFO
-FILEVERSION     0,3,19,0
-PRODUCTVERSION  0,3,19,0
+FILEVERSION     0,3,20,0
+PRODUCTVERSION  0,3,20,0
 FILEFLAGSMASK   0x3fL
 FILEFLAGS       0x0L
 FILEOS          VOS_NT_WINDOWS32
@@ -20,12 +20,12 @@ BEGIN
         BEGIN
             VALUE "CompanyName",      "Igneum"
             VALUE "FileDescription",  "Igneum Miner engine"
-            VALUE "FileVersion",      "0.3.19"
+            VALUE "FileVersion",      "0.3.20"
             VALUE "InternalName",     "igneum-app"
             VALUE "LegalCopyright",   "Igneum contributors"
             VALUE "OriginalFilename", "igneum-app.exe"
             VALUE "ProductName",      "Igneum Miner"
-            VALUE "ProductVersion",   "0.3.19"
+            VALUE "ProductVersion",   "0.3.20"
         END
     END
     BLOCK "VarFileInfo"
diff --git a/app/windows/version.h b/app/windows/version.h
index ba079dfa..82d9c6dc 100644
--- a/app/windows/version.h
+++ b/app/windows/version.h
@@ -3,6 +3,6 @@
 // packaging/windows/Igneum-Miner.iss when the app version moves. Include guards, not #pragma once: rc.exe reads it too.
 #ifndef IGNEUM_HOST_VERSION_H
 #define IGNEUM_HOST_VERSION_H
-#define IGNEUM_HOST_VERSION_STR "0.3.19"
-#define IGNEUM_HOST_VERSION_RC  0,3,19,0
+#define IGNEUM_HOST_VERSION_STR "0.3.20"
+#define IGNEUM_HOST_VERSION_RC  0,3,20,0
 #endif
diff --git a/docs/plans/release-0.3.19.md b/docs/plans/release-0.3.20.md
similarity index 99%
rename from docs/plans/release-0.3.19.md
rename to docs/plans/release-0.3.20.md
index 78ef5def..333251c8 100644
--- a/docs/plans/release-0.3.19.md
+++ b/docs/plans/release-0.3.20.md
@@ -6,6 +6,8 @@ The hourly cut after 0.3.16, under the coordinator's rule: every new switch at n
 
 > Renumbered again 7 October 2026, 08:2xZ (main): this feature tree is **0.3.19**; **0.3.18** is the app-only cut on the 0.3.17 tree (the engine's clock sample gated on igneum_getExecStatus, ledger N7; docs/plans/release-0.3.18.md on release-0.3.18-app); decimals is 0.3.20. Branches now: release-0.3.19 (app), release-0.3.19-node (fork, the mirror). Rows below keep the "0.3.18" they were written with; read it as this tree.
 
+> Renumbered a third time, 7 October 2026 10:4x UK (main): this feature tree is **0.3.20** (the dc141409 line plus the class v4 amendment, option A on AP-F8-1, and the proof archive; its canary gate as ordered). **0.3.19** is an app-only cut on the 0.3.18 app tree plus miner-ui-5 on the node pin 5899f603 (docs/plans/release-0.3.19.md on release-0.3.19). Branches: release-0.3.20 (app), release-0.3.20-node (fork, the mirror). Rows below keep the numbers they were written with.
+
 ## 1. The node tree
 
 | Branch | Tip | In 0.3.17 | Why |
diff --git a/packaging/mac/app/Info.plist b/packaging/mac/app/Info.plist
index fbfe27fd..eb3672f0 100644
--- a/packaging/mac/app/Info.plist
+++ b/packaging/mac/app/Info.plist
@@ -11,7 +11,7 @@
 	<key>CFBundleVersion</key>
 	<string>VERSION_STAMP</string>
 	<key>CFBundleShortVersionString</key>
-	<string>0.3.19</string>
+	<string>0.3.20</string>
 	<key>CFBundlePackageType</key>
 	<string>APPL</string>
 	<key>CFBundleExecutable</key>
diff --git a/packaging/windows/Igneum-Miner.iss b/packaging/windows/Igneum-Miner.iss
index e3bd3762..8ce04fa3 100644
--- a/packaging/windows/Igneum-Miner.iss
+++ b/packaging/windows/Igneum-Miner.iss
@@ -9,7 +9,7 @@
   #define ArtDir "..\..\brand\icons"
 #endif
 #ifndef AppVersion
-  #define AppVersion "0.3.19"
+  #define AppVersion "0.3.20"
 #endif
 #define AppName "Igneum Miner"
 #define Publisher "Igneum"