diff --git a/apport/packaging.py b/apport/packaging.py
index 2fda8e2a2..76d2a150b 100644
--- a/apport/packaging.py
+++ b/apport/packaging.py
@@ -55,6 +55,12 @@ def get_source(self, package: str) -> str:
             "this method must be implemented by a concrete subclass"
         )
 
+    def get_installed_binaries(self, source_package: str) -> set[str]:
+        """Return all installed binary packages for a given source."""
+        raise NotImplementedError(
+            "this method must be implemented by a concrete subclass"
+        )
+
     def get_package_origin(self, package: str) -> str | None:
         """Return package origin.
 
diff --git a/apport/packaging_impl/apt_dpkg.py b/apport/packaging_impl/apt_dpkg.py
index ad06b570b..3c03759c6 100644
--- a/apport/packaging_impl/apt_dpkg.py
+++ b/apport/packaging_impl/apt_dpkg.py
@@ -360,7 +360,7 @@ def _clear_apt_cache(self) -> None:
         self._apt_cache = None
         self._sandbox_apt_cache = None
 
-    def _cache(self):
+    def _cache(self) -> apt.Cache:
         """Return apt.Cache() (initialized lazily)."""
         if not self._apt_cache:
             self._clear_apt_cache()
@@ -444,6 +444,14 @@ def get_source(self, package: str) -> str:
             return self._apt_pkg(package).candidate.source_name
         raise ValueError(f"package {package} does not exist")
 
+    def get_installed_binaries(self, source_package: str) -> set[str]:
+        """Return all installed binary packages for a given source."""
+        return {
+            pkg.name
+            for pkg in self._cache()
+            if pkg.installed and (source_package == pkg.installed.source_name)
+        }
+
     def get_package_origin(self, package: str) -> str | None:
         """Return package origin.
 
diff --git a/apport/ui.py b/apport/ui.py
index 02625972e..fd2183f2e 100644
--- a/apport/ui.py
+++ b/apport/ui.py
@@ -777,27 +777,38 @@ def run_update_report(self) -> bool:
 
         # list of affected source packages
         self.report = apport.Report("Bug")
+        # FIXME: for now we assume this is a binary package because it's just easier
+        # and it didn't work with a source package anyway.
         if self.args.package:
-            pkgs = [self.args.package.strip()]
+            binary = self.args.package.strip()
+            pkgs = {packaging.get_source(binary): set((binary,))}
         else:
-            pkgs = self.crashdb.get_affected_packages(self.args.update_report)
+            pkgs = {
+                src: packaging.get_installed_binaries(src)
+                for src in self.crashdb.get_affected_packages(self.args.update_report)
+            }
 
         info_collected = False
-        for p in pkgs:
+        assert self.report is not None
+        for src, binaries in pkgs.items():
             # print(f"Collecting apport information for source package {p}...")
-            self.cur_package = p
-            self.report["SourcePackage"] = p
-            self.report["Package"] = p  # no way to find this out
+            assert binaries
+            self.cur_package = src
+            self.report["SourcePackage"] = src
+            self.report["Package"] = src  # Slight abuse of the field but it's mandatory
+            self.report["InstalledBinaries"] = " ".join(sorted(binaries))
 
             # we either must have the package installed or a source package
             # hook available to collect sensible information
             try:
-                packaging.get_version(p)
+                packaging.get_version(next(iter(binaries)))
             except ValueError:
                 if not os.path.exists(
-                    os.path.join(apport.report.PACKAGE_HOOK_DIR, f"source_{p}.py")
+                    os.path.join(apport.report.PACKAGE_HOOK_DIR, f"source_{src}.py")
                 ):
-                    print(f"Package {p} not installed and no hook available, ignoring")
+                    print(
+                        f"Package {src} not installed and no hook available, ignoring"
+                    )
                     continue
             self.collect_info(ignore_uninstalled=True)
             info_collected = True
diff --git a/tests/integration/test_packaging_apt_dpkg.py b/tests/integration/test_packaging_apt_dpkg.py
index 60099b516..236d3b1fc 100644
--- a/tests/integration/test_packaging_apt_dpkg.py
+++ b/tests/integration/test_packaging_apt_dpkg.py
@@ -116,6 +116,17 @@ def test_get_source(self) -> None:
         self.assertEqual(impl.get_source("bash"), "bash")
         self.assertIn("glibc", impl.get_source("libc6"))
 
+    def test_get_installed_binaries_library(self) -> None:
+        binaries = impl.get_installed_binaries("glibc")
+        self.assertIn("libc6", binaries)
+        self.assertNotIn("glibc", binaries)
+
+    def test_get_installed_binaries_binary(self) -> None:
+        self.assertIn("bash", impl.get_installed_binaries("bash"))
+
+    def test_get_installed_binaries_none(self) -> None:
+        self.assertEqual(set(impl.get_installed_binaries("nonexisting")), set())
+
     def test_get_package_origin(self) -> None:
         """get_package_origin()."""
         # determine distro name