diff -Nru clucene-core-2.3.3.4+dfsg/debian/changelog clucene-core-2.3.3.4+dfsg/debian/changelog
--- clucene-core-2.3.3.4+dfsg/debian/changelog	2021-02-17 18:25:01.000000000 +0000
+++ clucene-core-2.3.3.4+dfsg/debian/changelog	2021-02-17 21:11:42.000000000 +0000
@@ -1,3 +1,9 @@
+clucene-core (2.3.3.4+dfsg-1ubuntu3) hirsute; urgency=medium
+
+  * Make libclucene-contribs1v5f Conflict/Replace libclucene-contribs1v5
+
+ -- Balint Reczey <rbalint@ubuntu.com>  Wed, 17 Feb 2021 22:11:42 +0100
+
 clucene-core (2.3.3.4+dfsg-1ubuntu2) hirsute; urgency=medium
 
   * Drop defining float_t as double on s390x, rename packages changing the ABI
diff -Nru clucene-core-2.3.3.4+dfsg/debian/control clucene-core-2.3.3.4+dfsg/debian/control
--- clucene-core-2.3.3.4+dfsg/debian/control	2021-02-17 18:25:01.000000000 +0000
+++ clucene-core-2.3.3.4+dfsg/debian/control	2021-02-17 21:11:42.000000000 +0000
@@ -58,8 +58,8 @@
 Depends: ${misc:Depends}, ${shlibs:Depends}
 Pre-Depends: ${misc:Pre-Depends}
 Multi-Arch: same
-Conflicts: libclucene-core1
-Replaces: libclucene-core1
+Conflicts: libclucene-core1, libclucene-core1v5
+Replaces: libclucene-core1, libclucene-core1v5
 Description: core library for full-featured text search engine (runtime)
  CLucene is a C++ port of the popular Apache Lucene search engine
  (http://lucene.apache.org/java). It is released under LGPL or the Apache
@@ -101,8 +101,8 @@
 Depends: ${misc:Depends}, ${shlibs:Depends}
 Pre-Depends: ${misc:Pre-Depends}
 Multi-Arch: same
-Conflicts: libclucene-contribs1
-Replaces: libclucene-contribs1
+Conflicts: libclucene-contribs1, libclucene-contribs1v5
+Replaces: libclucene-contribs1, libclucene-contribs1v5
 Description: language specific text analyzers (runtime)
  CLucene is a C++ port of the popular Apache Lucene search engine
  (http://lucene.apache.org/java). It is released under LGPL or the Apache