diff --git a/debian/changelog b/debian/changelog
index b253b59..735352e 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -1,3 +1,21 @@
+findbugs (3.1.0~preview2-4) UNRELEASED; urgency=medium
+
+  * Remove constraints unnecessary since stretch:
+    + Build-Depends: Drop versioned constraint on debhelper, docbook-xsl,
+      libcommons-lang-java, libjaxen-java and libjdepend-java.
+    + libfindbugs-java: Drop versioned constraint on libcommons-lang-java and
+      libjaxen-java in Depends.
+    + libfindbugs-java: Drop versioned constraint on findbugs in Replaces.
+    + libfindbugs-java: Drop versioned constraint on findbugs in Breaks.
+    + libfindbugs-annotations-java: Drop versioned constraint on findbugs in
+      Replaces.
+    + libfindbugs-annotations-java: Drop versioned constraint on findbugs in
+      Breaks.
+    + libfindbugs-ant-java: Drop versioned constraint on findbugs in Replaces.
+    + libfindbugs-ant-java: Drop versioned constraint on findbugs in Breaks.
+
+ -- Debian Janitor <janitor@jelmer.uk>  Fri, 09 Jul 2021 19:57:23 -0000
+
 findbugs (3.1.0~preview2-3) unstable; urgency=medium
 
   * Team upload.
diff --git a/debian/control b/debian/control
index 0265b55..e79cff0 100644
--- a/debian/control
+++ b/debian/control
@@ -5,19 +5,19 @@
 Uploaders: ShuxiongYe <yeshuxiong@gmail.com>, Sylvestre Ledru <sylvestre@debian.org>
 Build-Depends: ant,
                ant-optional,
-               debhelper (>= 11),
+               debhelper,
                default-jdk (>= 2:1.8),
-               docbook-xsl (>= 1.76),
+               docbook-xsl,
                help2man,
                java-wrappers,
                junit4,
                libasm-java (>= 5.0),
                libbcel-java (>= 6.0),
-               libcommons-lang-java (>= 2.4),
+               libcommons-lang-java,
                libdom4j-java (>= 1.6.1),
-               libjaxen-java (>= 1.1.1),
+               libjaxen-java,
                libjcip-annotations-java,
-               libjdepend-java (>= 2.9),
+               libjdepend-java,
                libjformatstring-java (>= 0.10~20131207-2~),
                libjsr305-java,
                libsaxon-java,
@@ -45,15 +45,13 @@
 Package: libfindbugs-java
 Architecture: all
 Depends: libasm-java (>= 5.0),
-         libcommons-lang-java (>= 2.4),
+         libcommons-lang-java,
          libbcel-java (>= 6.0),
          libdom4j-java (>= 1.6.1),
-         libjaxen-java (>= 1.1.1),
+         libjaxen-java,
          libjcip-annotations-java, libjsr305-java,
          libjformatstring-java (>= 0.10~20131207-2~),
          ${misc:Depends}
-Breaks: findbugs (<< 3.1.0~)
-Replaces: findbugs (<< 3.1.0~)
 Description: Static java code analyzer to find bugs (Library)
  FindBugs is a program which uses static analysis to look for bugs in Java
  code. It can analyze programs compiled for any version of Java, from 1.0
@@ -64,8 +62,6 @@
 Package: libfindbugs-annotations-java
 Architecture: all
 Depends: ${misc:Depends}
-Breaks: findbugs (<< 3.1.0~)
-Replaces: findbugs (<< 3.1.0~)
 Description: Static java code analyzer to find bugs (Annotations)
  FindBugs is a program which uses static analysis to look for bugs in Java
  code. It can analyze programs compiled for any version of Java, from 1.0
@@ -76,8 +72,6 @@
 Package: libfindbugs-ant-java
 Architecture: all
 Depends: libfindbugs-java, ${misc:Depends}
-Breaks: findbugs (<< 3.1.0~)
-Replaces: findbugs (<< 3.1.0~)
 Description: Static java code analyzer to find bugs (Ant tasks)
  FindBugs is a program which uses static analysis to look for bugs in Java
  code. It can analyze programs compiled for any version of Java, from 1.0