diff --git a/lerna.json b/lerna.json
index fa4258101..26d3d87e7 100644
--- a/lerna.json
+++ b/lerna.json
@@ -1,5 +1,5 @@
 {
     "lerna": "2.10.2",
     "packages": ["packages/*"],
-    "version": "5.1.1"
+    "version": "6.0.0"
 }
diff --git a/packages/parse5-html-rewriting-stream/package.json b/packages/parse5-html-rewriting-stream/package.json
index b95de57bb..297a81f95 100644
--- a/packages/parse5-html-rewriting-stream/package.json
+++ b/packages/parse5-html-rewriting-stream/package.json
@@ -1,7 +1,7 @@
 {
     "name": "parse5-html-rewriting-stream",
     "description": "Streaming HTML rewriter.",
-    "version": "5.1.1",
+    "version": "6.0.0",
     "author": "Ivan Nikulin <ifaaan@gmail.com> (https://github.com/inikulin)",
     "contributors": "https://github.com/inikulin/parse5/graphs/contributors",
     "homepage": "https://github.com/inikulin/parse5",
@@ -17,8 +17,8 @@
     "license": "MIT",
     "main": "./lib/index.js",
     "dependencies": {
-        "parse5": "^5.1.1",
-        "parse5-sax-parser": "^5.1.1"
+        "parse5": "^6.0.0",
+        "parse5-sax-parser": "^6.0.0"
     },
     "repository": {
         "type": "git",
diff --git a/packages/parse5-htmlparser2-tree-adapter/package.json b/packages/parse5-htmlparser2-tree-adapter/package.json
index 4c71c1b5f..dd2cd152c 100644
--- a/packages/parse5-htmlparser2-tree-adapter/package.json
+++ b/packages/parse5-htmlparser2-tree-adapter/package.json
@@ -1,7 +1,7 @@
 {
     "name": "parse5-htmlparser2-tree-adapter",
     "description": "htmlparser2 tree adapter for parse5.",
-    "version": "5.1.1",
+    "version": "6.0.0",
     "author": "Ivan Nikulin <ifaaan@gmail.com> (https://github.com/inikulin)",
     "contributors": "https://github.com/inikulin/parse5/graphs/contributors",
     "homepage": "https://github.com/inikulin/parse5",
@@ -14,7 +14,7 @@
     "license": "MIT",
     "main": "./lib/index.js",
     "dependencies": {
-        "parse5": "^5.1.1"
+        "parse5": "^6.0.0"
     },
     "repository": {
         "type": "git",
diff --git a/packages/parse5-parser-stream/package.json b/packages/parse5-parser-stream/package.json
index 284dd04e9..e7fdc858a 100644
--- a/packages/parse5-parser-stream/package.json
+++ b/packages/parse5-parser-stream/package.json
@@ -1,7 +1,7 @@
 {
     "name": "parse5-parser-stream",
     "description": "Streaming HTML parser with scripting support.",
-    "version": "5.1.1",
+    "version": "6.0.0",
     "author": "Ivan Nikulin <ifaaan@gmail.com> (https://github.com/inikulin)",
     "contributors": "https://github.com/inikulin/parse5/graphs/contributors",
     "homepage": "https://github.com/inikulin/parse5",
@@ -14,7 +14,7 @@
     "license": "MIT",
     "main": "./lib/index.js",
     "dependencies": {
-        "parse5": "^5.1.1"
+        "parse5": "^6.0.0"
     },
     "repository": {
         "type": "git",
diff --git a/packages/parse5-plain-text-conversion-stream/package.json b/packages/parse5-plain-text-conversion-stream/package.json
index 7db65e74f..28827c9b4 100644
--- a/packages/parse5-plain-text-conversion-stream/package.json
+++ b/packages/parse5-plain-text-conversion-stream/package.json
@@ -1,7 +1,7 @@
 {
     "name": "parse5-plain-text-conversion-stream",
     "description": "Stream that converts plain text files into HTML document.",
-    "version": "5.1.1",
+    "version": "6.0.0",
     "author": "Ivan Nikulin <ifaaan@gmail.com> (https://github.com/inikulin)",
     "contributors": "https://github.com/inikulin/parse5/graphs/contributors",
     "homepage": "https://github.com/inikulin/parse5",
@@ -17,8 +17,8 @@
     "license": "MIT",
     "main": "./lib/index.js",
     "dependencies": {
-        "parse5": "^5.1.1",
-        "parse5-parser-stream": "^5.1.1"
+        "parse5": "^6.0.0",
+        "parse5-parser-stream": "^6.0.0"
     },
     "repository": {
         "type": "git",
diff --git a/packages/parse5-sax-parser/package.json b/packages/parse5-sax-parser/package.json
index f8873fa15..3560a5be5 100644
--- a/packages/parse5-sax-parser/package.json
+++ b/packages/parse5-sax-parser/package.json
@@ -1,7 +1,7 @@
 {
     "name": "parse5-sax-parser",
     "description": "Streaming SAX-style HTML parser.",
-    "version": "5.1.1",
+    "version": "6.0.0",
     "author": "Ivan Nikulin <ifaaan@gmail.com> (https://github.com/inikulin)",
     "contributors": "https://github.com/inikulin/parse5/graphs/contributors",
     "homepage": "https://github.com/inikulin/parse5",
@@ -15,7 +15,7 @@
     "license": "MIT",
     "main": "./lib/index.js",
     "dependencies": {
-        "parse5": "^5.1.1"
+        "parse5": "^6.0.0"
     },
     "repository": {
         "type": "git",
diff --git a/packages/parse5-serializer-stream/package.json b/packages/parse5-serializer-stream/package.json
index 00a671514..e9829e16b 100644
--- a/packages/parse5-serializer-stream/package.json
+++ b/packages/parse5-serializer-stream/package.json
@@ -1,7 +1,7 @@
 {
     "name": "parse5-serializer-stream",
     "description": "Streaming HTML serializer.",
-    "version": "5.1.1",
+    "version": "6.0.0",
     "author": "Ivan Nikulin <ifaaan@gmail.com> (https://github.com/inikulin)",
     "contributors": "https://github.com/inikulin/parse5/graphs/contributors",
     "homepage": "https://github.com/inikulin/parse5",
@@ -16,7 +16,7 @@
     "license": "MIT",
     "main": "./lib/index.js",
     "dependencies": {
-        "parse5": "^5.1.1"
+        "parse5": "^6.0.0"
     },
     "repository": {
         "type": "git",
diff --git a/packages/parse5/package.json b/packages/parse5/package.json
index 7e9347327..f7e9402b7 100644
--- a/packages/parse5/package.json
+++ b/packages/parse5/package.json
@@ -1,7 +1,7 @@
 {
     "name": "parse5",
     "description": "HTML parser and serializer.",
-    "version": "5.1.1",
+    "version": "6.0.0",
     "author": "Ivan Nikulin <ifaaan@gmail.com> (https://github.com/inikulin)",
     "contributors": "https://github.com/inikulin/parse5/graphs/contributors",
     "homepage": "https://github.com/inikulin/parse5",