diff --git a/package.json b/package.json
index d19db679..0d956865 100644
--- a/package.json
+++ b/package.json
@@ -53,7 +53,7 @@
     "markdownlint-rule-helpers": "~0.11.0",
     "rimraf": "~3.0.2",
     "strip-json-comments": "~3.1.1",
-    "tape": "~4.13.2",
+    "tape": "~5.0.1",
     "tape-player": "~0.1.1",
     "toml": "~3.0.0",
     "tv4": "~1.3.0",
diff --git a/test/markdownlint-test.js b/test/markdownlint-test.js
index 8707e258..e229a63c 100644
--- a/test/markdownlint-test.js
+++ b/test/markdownlint-test.js
@@ -203,7 +203,7 @@ tape("projectFiles", (test) => {
       "CONTRIBUTING.md": [],
       "helpers/README.md": []
     };
-    test.deepEqual(actual, expected, "Issue(s) with project files.");
+    test.deepLooseEqual(actual, expected, "Issue(s) with project files.");
     test.end();
   });
 });
@@ -233,7 +233,7 @@ tape("resultFormattingV0", (test) => {
         "MD002": [ 1 ]
       }
     };
-    test.deepEqual(actualResult, expectedResult, "Undetected issues.");
+    test.deepLooseEqual(actualResult, expectedResult, "Undetected issues.");
     let actualMessage = actualResult.toString();
     let expectedMessage =
       "./test/atx_heading_spacing.md: 3: MD002" +
@@ -289,7 +289,7 @@ tape("resultFormattingSyncV0", (test) => {
       "MD002": [ 1 ]
     }
   };
-  test.deepEqual(actualResult, expectedResult, "Undetected issues.");
+  test.deepLooseEqual(actualResult, expectedResult, "Undetected issues.");
   let actualMessage = actualResult.toString();
   let expectedMessage =
     "./test/atx_heading_spacing.md: 3: MD002" +
@@ -396,7 +396,7 @@ tape("resultFormattingV1", (test) => {
           "errorRange": null }
       ]
     };
-    test.deepEqual(actualResult, expectedResult, "Undetected issues.");
+    test.deepLooseEqual(actualResult, expectedResult, "Undetected issues.");
     const actualMessage = actualResult.toString();
     const expectedMessage =
       "truncate: 1: MD021/no-multiple-space-closed-atx" +
@@ -491,7 +491,7 @@ tape("resultFormattingV2", (test) => {
           "errorRange": null }
       ]
     };
-    test.deepEqual(actualResult, expectedResult, "Undetected issues.");
+    test.deepLooseEqual(actualResult, expectedResult, "Undetected issues.");
     const actualMessage = actualResult.toString();
     const expectedMessage =
       "truncate: 1: MD021/no-multiple-space-closed-atx" +
@@ -605,7 +605,7 @@ tape("resultFormattingV3", (test) => {
         }
       ]
     };
-    test.deepEqual(actualResult, expectedResult, "Undetected issues.");
+    test.deepLooseEqual(actualResult, expectedResult, "Undetected issues.");
     const actualMessage = actualResult.toString();
     const expectedMessage =
       "input: 1: MD009/no-trailing-spaces" +
@@ -638,7 +638,7 @@ tape("onePerLineResultVersion0", (test) => {
         "MD010": [ 1 ]
       }
     };
-    test.deepEqual(actualResult, expectedResult, "Undetected issues.");
+    test.deepLooseEqual(actualResult, expectedResult, "Undetected issues.");
     test.end();
   });
 });
@@ -668,7 +668,7 @@ tape("onePerLineResultVersion1", (test) => {
         }
       ]
     };
-    test.deepEqual(actualResult, expectedResult, "Undetected issues.");
+    test.deepLooseEqual(actualResult, expectedResult, "Undetected issues.");
     test.end();
   });
 });
@@ -697,7 +697,7 @@ tape("onePerLineResultVersion2", (test) => {
         }
       ]
     };
-    test.deepEqual(actualResult, expectedResult, "Undetected issues.");
+    test.deepLooseEqual(actualResult, expectedResult, "Undetected issues.");
     test.end();
   });
 });
@@ -746,7 +746,7 @@ tape("manyPerLineResultVersion3", (test) => {
         }
       ]
     };
-    test.deepEqual(actualResult, expectedResult, "Undetected issues.");
+    test.deepLooseEqual(actualResult, expectedResult, "Undetected issues.");
     test.end();
   });
 });
@@ -780,7 +780,7 @@ tape("frontMatterResultVersion3", (test) => {
         }
       ]
     };
-    test.deepEqual(actualResult, expectedResult, "Undetected issues.");
+    test.deepLooseEqual(actualResult, expectedResult, "Undetected issues.");
     test.end();
   });
 });
@@ -805,7 +805,7 @@ tape("stringInputLineEndings", (test) => {
       "crlf": { "MD018": [ 3 ] },
       "mixed": { "MD018": [ 3 ] }
     };
-    test.deepEqual(actualResult, expectedResult, "Undetected issues.");
+    test.deepLooseEqual(actualResult, expectedResult, "Undetected issues.");
     test.end();
   });
 });
@@ -829,7 +829,7 @@ tape("inputOnlyNewline", (test) => {
       "lf": [],
       "crlf": []
     };
-    test.deepEqual(actualResult, expectedResult, "Undetected issues.");
+    test.deepLooseEqual(actualResult, expectedResult, "Undetected issues.");
     test.end();
   });
 });
@@ -858,7 +858,7 @@ tape("defaultTrue", (test) => {
         "MD041": [ 1 ]
       }
     };
-    test.deepEqual(actualResult, expectedResult, "Undetected issues.");
+    test.deepLooseEqual(actualResult, expectedResult, "Undetected issues.");
     test.end();
   });
 });
@@ -881,7 +881,7 @@ tape("defaultFalse", (test) => {
       "./test/atx_heading_spacing.md": {},
       "./test/first_heading_bad_atx.md": {}
     };
-    test.deepEqual(actualResult, expectedResult, "Undetected issues.");
+    test.deepLooseEqual(actualResult, expectedResult, "Undetected issues.");
     test.end();
   });
 });
@@ -908,7 +908,7 @@ tape("defaultUndefined", (test) => {
         "MD041": [ 1 ]
       }
     };
-    test.deepEqual(actualResult, expectedResult, "Undetected issues.");
+    test.deepLooseEqual(actualResult, expectedResult, "Undetected issues.");
     test.end();
   });
 });
@@ -936,7 +936,7 @@ tape("disableRules", (test) => {
       },
       "./test/first_heading_bad_atx.md": {}
     };
-    test.deepEqual(actualResult, expectedResult, "Undetected issues.");
+    test.deepLooseEqual(actualResult, expectedResult, "Undetected issues.");
     test.end();
   });
 });
@@ -966,7 +966,7 @@ tape("enableRules", (test) => {
         "MD002": [ 1 ]
       }
     };
-    test.deepEqual(actualResult, expectedResult, "Undetected issues.");
+    test.deepLooseEqual(actualResult, expectedResult, "Undetected issues.");
     test.end();
   });
 });
@@ -996,7 +996,7 @@ tape("enableRulesMixedCase", (test) => {
         "MD002": [ 1 ]
       }
     };
-    test.deepEqual(actualResult, expectedResult, "Undetected issues.");
+    test.deepLooseEqual(actualResult, expectedResult, "Undetected issues.");
     test.end();
   });
 });
@@ -1024,7 +1024,7 @@ tape("disableTag", (test) => {
         "MD041": [ 1 ]
       }
     };
-    test.deepEqual(actualResult, expectedResult, "Undetected issues.");
+    test.deepLooseEqual(actualResult, expectedResult, "Undetected issues.");
     test.end();
   });
 });
@@ -1052,7 +1052,7 @@ tape("enableTag", (test) => {
       },
       "./test/first_heading_bad_atx.md": {}
     };
-    test.deepEqual(actualResult, expectedResult, "Undetected issues.");
+    test.deepLooseEqual(actualResult, expectedResult, "Undetected issues.");
     test.end();
   });
 });
@@ -1080,7 +1080,7 @@ tape("enableTagMixedCase", (test) => {
       },
       "./test/first_heading_bad_atx.md": {}
     };
-    test.deepEqual(actualResult, expectedResult, "Undetected issues.");
+    test.deepLooseEqual(actualResult, expectedResult, "Undetected issues.");
     test.end();
   });
 });
@@ -1148,7 +1148,7 @@ tape("styleAll", (test) => {
         "MD048": [ 77 ]
       }
     };
-    test.deepEqual(actualResult, expectedResult, "Undetected issues.");
+    test.deepLooseEqual(actualResult, expectedResult, "Undetected issues.");
     test.end();
   });
 });
@@ -1190,7 +1190,7 @@ tape("styleRelaxed", (test) => {
         "MD048": [ 77 ]
       }
     };
-    test.deepEqual(actualResult, expectedResult, "Undetected issues.");
+    test.deepLooseEqual(actualResult, expectedResult, "Undetected issues.");
     test.end();
   });
 });
@@ -1212,7 +1212,7 @@ tape("nullFrontMatter", (test) => {
     const expectedResult = {
       "content": { "MD010": [ 2 ] }
     };
-    test.deepEqual(result, expectedResult, "Undetected issues.");
+    test.deepLooseEqual(result, expectedResult, "Undetected issues.");
     test.end();
   });
 });
@@ -1233,7 +1233,7 @@ tape("customFrontMatter", (test) => {
     const expectedResult = {
       "content": []
     };
-    test.deepEqual(result, expectedResult, "Did not get empty results.");
+    test.deepLooseEqual(result, expectedResult, "Did not get empty results.");
     test.end();
   });
 });
@@ -1265,7 +1265,7 @@ tape("noInlineConfig", (test) => {
         "MD010": [ 3, 7, 11 ]
       }
     };
-    test.deepEqual(result, expectedResult, "Undetected issues.");
+    test.deepLooseEqual(result, expectedResult, "Undetected issues.");
     test.end();
   });
 });
@@ -1320,7 +1320,7 @@ tape("readmeHeadings", (test) => {
   }, function callback(err, result) {
     test.ifError(err);
     const expected = { "README.md": [] };
-    test.deepEqual(result, expected, "Unexpected issues.");
+    test.deepLooseEqual(result, expected, "Unexpected issues.");
     test.end();
   });
 });
@@ -1351,7 +1351,7 @@ tape("filesArrayAsString", (test) => {
   }, function callback(err, actual) {
     test.ifError(err);
     const expected = { "README.md": [] };
-    test.deepEqual(actual, expected, "Unexpected issues.");
+    test.deepLooseEqual(actual, expected, "Unexpected issues.");
     test.end();
   });
 });
@@ -1360,7 +1360,11 @@ tape("missingOptions", (test) => {
   test.plan(2);
   markdownlint(null, function callback(err, result) {
     test.ifError(err);
-    test.deepEqual(result, {}, "Did not get empty result for missing options.");
+    test.deepLooseEqual(
+      result,
+      {},
+      "Did not get empty result for missing options."
+    );
     test.end();
   });
 });
@@ -1425,7 +1429,7 @@ tape("missingStringValue", (test) => {
       "null": [],
       "empty": []
     };
-    test.deepEqual(result, expectedResult, "Did not get empty results.");
+    test.deepLooseEqual(result, expectedResult, "Did not get empty results.");
     test.end();
   });
 });
@@ -2635,7 +2639,7 @@ tape("configMultipleHybrid", (test) => {
         ...require("./config/config-grandparent.json")
       };
       delete expected.extends;
-      test.deepEqual(actual, expected, "Config object not correct.");
+      test.deepLooseEqual(actual, expected, "Config object not correct.");
       test.end();
     });
 });
@@ -2770,7 +2774,7 @@ tape("configMultipleHybridSync", (test) => {
     ...require("./config/config-grandparent.json")
   };
   delete expected.extends;
-  test.deepEqual(actual, expected, "Config object not correct.");
+  test.deepLooseEqual(actual, expected, "Config object not correct.");
   test.end();
 });
 
@@ -2840,7 +2844,7 @@ tape("customRulesV0", (test) => {
       "first-line": [ 1 ],
       "letters-E-X": [ 3, 7 ]
     };
-    test.deepEqual(actualResult, expectedResult, "Undetected issues.");
+    test.deepLooseEqual(actualResult, expectedResult, "Undetected issues.");
     let actualMessage = actualResult.toString();
     let expectedMessage =
       "./test/custom-rules.md: 12: any-blockquote" +
@@ -2976,7 +2980,7 @@ tape("customRulesV1", (test) => {
         "errorContext": "text",
         "errorRange": null }
     ];
-    test.deepEqual(actualResult, expectedResult, "Undetected issues.");
+    test.deepLooseEqual(actualResult, expectedResult, "Undetected issues.");
     const actualMessage = actualResult.toString();
     const expectedMessage =
       "./test/custom-rules.md: 12: any-blockquote/any-blockquote" +
@@ -3084,7 +3088,7 @@ tape("customRulesV2", (test) => {
         "errorContext": "text",
         "errorRange": null }
     ];
-    test.deepEqual(actualResult, expectedResult, "Undetected issues.");
+    test.deepLooseEqual(actualResult, expectedResult, "Undetected issues.");
     const actualMessage = actualResult.toString();
     const expectedMessage =
       "./test/custom-rules.md: 12: any-blockquote" +
@@ -3137,7 +3141,7 @@ tape("customRulesConfig", (test) => {
       "first-line": [ 1 ],
       "letters-E-X": [ 7 ]
     };
-    test.deepEqual(actualResult, expectedResult, "Undetected issues.");
+    test.deepLooseEqual(actualResult, expectedResult, "Undetected issues.");
     test.end();
   });
 });
@@ -3157,7 +3161,7 @@ tape("customRulesNpmPackage", (test) => {
     expectedResult.string = {
       "sample-rule": [ 3 ]
     };
-    test.deepEqual(actualResult, expectedResult, "Undetected issues.");
+    test.deepLooseEqual(actualResult, expectedResult, "Undetected issues.");
     test.end();
   });
 });
@@ -3656,7 +3660,7 @@ tape("customRulesOnErrorLazy", (test) => {
         }
       ]
     };
-    test.deepEqual(actualResult, expectedResult, "Undetected issues.");
+    test.deepLooseEqual(actualResult, expectedResult, "Undetected issues.");
     test.end();
   });
 });
@@ -3717,7 +3721,7 @@ tape("customRulesOnErrorModified", (test) => {
         }
       ]
     };
-    test.deepEqual(actualResult, expectedResult, "Undetected issues.");
+    test.deepLooseEqual(actualResult, expectedResult, "Undetected issues.");
     test.end();
   });
 });
@@ -3754,7 +3758,7 @@ tape("customRulesThrowForFileHandled", (test) => {
         }
       ]
     };
-    test.deepEqual(actualResult, expectedResult, "Undetected issues.");
+    test.deepLooseEqual(actualResult, expectedResult, "Undetected issues.");
     test.end();
   });
 });
@@ -3806,7 +3810,7 @@ tape("customRulesThrowForStringHandled", (test) => {
         }
       ]
     };
-    test.deepEqual(actualResult, expectedResult, "Undetected issues.");
+    test.deepLooseEqual(actualResult, expectedResult, "Undetected issues.");
     test.end();
   });
 });
@@ -3847,7 +3851,7 @@ tape("customRulesOnErrorInvalidHandled", (test) => {
         }
       ]
     };
-    test.deepEqual(actualResult, expectedResult, "Undetected issues.");
+    test.deepLooseEqual(actualResult, expectedResult, "Undetected issues.");
     test.end();
   });
 });
@@ -3906,7 +3910,7 @@ tape("customRulesDoc", (test) => {
   }, function callback(err, actual) {
     test.ifError(err);
     const expected = { "doc/CustomRules.md": [] };
-    test.deepEqual(actual, expected, "Unexpected issues.");
+    test.deepLooseEqual(actual, expected, "Unexpected issues.");
     test.end();
   });
 });
@@ -3941,7 +3945,7 @@ tape("customRulesLintJavaScript", (test) => {
         }
       ]
     };
-    test.deepEqual(actual, expected, "Unexpected issues.");
+    test.deepLooseEqual(actual, expected, "Unexpected issues.");
     test.end();
   });
 });
@@ -3965,7 +3969,7 @@ tape("markdownItPluginsSingle", (test) => {
   }, function callback(err, actual) {
     test.ifError(err);
     const expected = { "string": [] };
-    test.deepEqual(actual, expected, "Unexpected issues.");
+    test.deepLooseEqual(actual, expected, "Unexpected issues.");
     test.end();
   });
 });
@@ -3985,7 +3989,7 @@ tape("markdownItPluginsMultiple", (test) => {
   }, function callback(err, actual) {
     test.ifError(err);
     const expected = { "string": [] };
-    test.deepEqual(actual, expected, "Unexpected issues.");
+    test.deepLooseEqual(actual, expected, "Unexpected issues.");
     test.end();
   });
 });
@@ -4009,7 +4013,7 @@ tape("markdownItPluginsMathjax", (test) => {
   }, function callback(err, actual) {
     test.ifError(err);
     const expected = { "string": [] };
-    test.deepEqual(actual, expected, "Unexpected issues.");
+    test.deepLooseEqual(actual, expected, "Unexpected issues.");
     test.end();
   });
 });
@@ -4036,7 +4040,7 @@ $$\n`
         "MD041": [ 1 ]
       }
     };
-    test.deepEqual(actual, expected, "Unexpected issues.");
+    test.deepLooseEqual(actual, expected, "Unexpected issues.");
     test.end();
   });
 });