diff --git a/diff_cover/diff_cover_tool.py b/diff_cover/diff_cover_tool.py
index 5e04bcd5..5a401ae4 100644
--- a/diff_cover/diff_cover_tool.py
+++ b/diff_cover/diff_cover_tool.py
@@ -41,6 +41,9 @@
 )
 QUIET_HELP = "Only print errors and failures"
 SHOW_UNCOVERED = "Show uncovered lines on the console"
+EXPAND_COVERAGE_REPORT = (
+    "Append missing lines in coverage reports based on the hits of the previous line."
+)
 INCLUDE_UNTRACKED_HELP = "Include untracked files"
 CONFIG_FILE_HELP = "The configuration file to use"
 DIFF_FILE_HELP = "The diff file to use"
@@ -93,6 +96,13 @@ def parse_coverage_args(argv):
         "--show-uncovered", action="store_true", default=None, help=SHOW_UNCOVERED
     )
 
+    parser.add_argument(
+        "--expand_coverage_report",
+        action="store_true",
+        default=None,
+        help=EXPAND_COVERAGE_REPORT,
+    )
+
     parser.add_argument(
         "--external-css-file",
         metavar="FILENAME",
@@ -183,6 +193,7 @@ def parse_coverage_args(argv):
         "ignore_whitespace": False,
         "diff_range_notation": "...",
         "quiet": False,
+        "expand_coverage_report": False,
     }
 
     return get_config(parser=parser, argv=argv, defaults=defaults, tool=Tool.DIFF_COVER)
@@ -204,6 +215,7 @@ def generate_coverage_report(
     src_roots=None,
     quiet=False,
     show_uncovered=False,
+    expand_coverage_report=False,
 ):
     """
     Generate the diff coverage report, using kwargs from `parse_args()`.
@@ -231,7 +243,7 @@ def generate_coverage_report(
     if len(xml_roots) > 0 and len(lcov_roots) > 0:
         raise ValueError(f"Mixing LCov and XML reports is not supported yet")
     elif len(xml_roots) > 0:
-        coverage = XmlCoverageReporter(xml_roots, src_roots)
+        coverage = XmlCoverageReporter(xml_roots, src_roots, expand_coverage_report)
     else:
         coverage = LcovCoverageReporter(lcov_roots, src_roots)
 
@@ -308,6 +320,7 @@ def main(argv=None, directory=None):
         src_roots=arg_dict["src_roots"],
         quiet=quiet,
         show_uncovered=arg_dict["show_uncovered"],
+        expand_coverage_report=arg_dict["expand_coverage_report"],
     )
 
     if percent_covered >= fail_under:
diff --git a/diff_cover/violationsreporters/violations_reporter.py b/diff_cover/violationsreporters/violations_reporter.py
index a4f4f382..350b2b95 100644
--- a/diff_cover/violationsreporters/violations_reporter.py
+++ b/diff_cover/violationsreporters/violations_reporter.py
@@ -24,7 +24,7 @@ class XmlCoverageReporter(BaseViolationReporter):
     Query information from a Cobertura|Clover|JaCoCo XML coverage report.
     """
 
-    def __init__(self, xml_roots, src_roots=None):
+    def __init__(self, xml_roots, src_roots=None, expand_coverage_report=False):
         """
         Load the XML coverage report represented
         by the cElementTree with root element `xml_root`.
@@ -41,6 +41,7 @@ def __init__(self, xml_roots, src_roots=None):
         self._xml_cache = [{} for i in range(len(xml_roots))]
 
         self._src_roots = src_roots or [""]
+        self._expand_coverage_report = expand_coverage_report
 
     def _get_xml_classes(self, xml_document):
         """
@@ -216,6 +217,25 @@ def _cache_file(self, src_path):
                 if line_nodes is None:
                     continue
 
+                # Expand coverage report with not reported lines
+                if self._expand_coverage_report:
+                    reported_line_hits = {}
+                    for line in line_nodes:
+                        reported_line_hits[int(line.get(_number))] = int(
+                            line.get(_hits, 0)
+                        )
+                    last_hit_number = 0
+                    for line_number in range(
+                        min(reported_line_hits.keys()), max(reported_line_hits.keys())
+                    ):
+                        if line_number in reported_line_hits:
+                            last_hit_number = reported_line_hits[line_number]
+                        else:
+                            # This is an unreported line. We add it with the previous line hit score
+                            line_nodes.append(
+                                {_hits: last_hit_number, _number: line_number}
+                            )
+
                 # First case, need to define violations initially
                 if violations is None:
                     violations = {