diff -Nru minexpert3-11.4.2/debian/changelog minexpert3-11.4.2/debian/changelog
--- minexpert3-11.4.2/debian/changelog	2026-04-13 23:26:15.000000000 +0200
+++ minexpert3-11.4.2/debian/changelog	2026-04-14 12:16:37.000000000 +0200
@@ -1,3 +1,11 @@
+minexpert3 (11.4.2-1.1) unstable; urgency=medium
+
+  * Non-maintainer upload.
+  * Fixup breaks/replaces to make oldlibs packages installable
+    (Closes: #1133684, LP: #2148288)
+
+ -- Gianfranco Costamagna <locutusofborg@debian.org>  Tue, 14 Apr 2026 12:16:37 +0200
+
 minexpert3 (11.4.2-1) unstable; urgency=low
 
   * Bug fix release (DiscoveriesPreferences failure).
diff -Nru minexpert3-11.4.2/debian/control minexpert3-11.4.2/debian/control
--- minexpert3-11.4.2/debian/control	2026-04-13 23:26:15.000000000 +0200
+++ minexpert3-11.4.2/debian/control	2026-04-14 12:16:21.000000000 +0200
@@ -74,8 +74,8 @@
 Depends: ${shlibs:Depends},
  ${misc:Depends}
 Suggests: minexpert3-doc (>= ${source:Upstream-Version})
-Replaces: minexpert, minexpert2
-Breaks: minexpert, minexpert
+Replaces: minexpert, minexpert2 (<< 10.0.0-1)
+Breaks: minexpert, minexpert2 (<< 10.0.0-1)
 Description: MS^n mass spectrometric data visualization and mining (runtime)
  MineXpert3 allows the user to perform the following tasks:
   - Open mass spectrometry data files (mzML, mzXML, asc, xy, ...);
@@ -107,8 +107,8 @@
 Depends: libjs-jquery,
          libjs-highlight.js,
          ${misc:Depends}
-Replaces: minexpert2-doc
-Breaks: minexpert2-doc
+Replaces: minexpert2-doc (<< 10.0.0-1)
+Breaks: minexpert2-doc (<< 10.0.0-1)
 Description: MS^n mass spectrometric data visualization and mining (doc)
  MineXpert3 allows the user to perform the following tasks:
   - Open mass spectrometry data files (mzML, mzXML, asc, xy, ...);
diff -Nru minexpert3-11.4.2/debian/sid-control.txt minexpert3-11.4.2/debian/sid-control.txt
--- minexpert3-11.4.2/debian/sid-control.txt	2026-04-13 23:26:15.000000000 +0200
+++ minexpert3-11.4.2/debian/sid-control.txt	2026-04-14 12:16:21.000000000 +0200
@@ -74,8 +74,8 @@
 Depends: ${shlibs:Depends},
  ${misc:Depends}
 Suggests: minexpert3-doc (>= ${source:Upstream-Version})
-Replaces: minexpert, minexpert2
-Breaks: minexpert, minexpert
+Replaces: minexpert, minexpert2 (<< 10.0.0-1)
+Breaks: minexpert, minexpert2 (<< 10.0.0-1)
 Description: MS^n mass spectrometric data visualization and mining (runtime)
  MineXpert3 allows the user to perform the following tasks:
   - Open mass spectrometry data files (mzML, mzXML, asc, xy, ...);
@@ -107,8 +107,8 @@
 Depends: libjs-jquery,
          libjs-highlight.js,
          ${misc:Depends}
-Replaces: minexpert2-doc
-Breaks: minexpert2-doc
+Replaces: minexpert2-doc (<< 10.0.0-1)
+Breaks: minexpert2-doc (<< 10.0.0-1)
 Description: MS^n mass spectrometric data visualization and mining (doc)
  MineXpert3 allows the user to perform the following tasks:
   - Open mass spectrometry data files (mzML, mzXML, asc, xy, ...);