diff --git a/src/main/resources/META-INF/plugin.xml b/src/main/resources/META-INF/plugin.xml
index 908f46b..8cc237e 100644
--- a/src/main/resources/META-INF/plugin.xml
+++ b/src/main/resources/META-INF/plugin.xml
@@ -37,7 +37,7 @@
         ]]></description>
     <change-notes><![CDATA[
         <ul>
-            <li>TBD
+            <li>1.8.0
                 <ul>
                     <li>Add support for es6 custom components</li>
                     <li>Add support for custom TypeScript components using <a href="https://github.com/timo-reymann/mjml-custom-component-decorator">mjml-custom-component-decorator</a></li>
@@ -46,6 +46,7 @@
                     <li>Add gutter icon for custom component usage</li>
                     <li>Add boolean properties</li>
                     <li>Add loading progress for copying preview files</li>
+                    <li>Invalid attribute values are now treated as warnings to prevent custom template engines etc. built on top of mjml to highlight as error</li>
                 </ul>
             </li>
             <li>1.7.0
diff --git a/testData/inspection/color/emptyColor.mjml b/testData/inspection/color/emptyColor.mjml
index 61da753..21e3c27 100644
--- a/testData/inspection/color/emptyColor.mjml
+++ b/testData/inspection/color/emptyColor.mjml
@@ -1,3 +1,3 @@
 <mj-section
-    <error descr="Invalid color specification, either the color name, hex or rgb notation can be used">background-color="a"</error>
+    <warning descr="Invalid color specification, either the color name, hex or rgb notation can be used">background-color="a"</warning>
 ></mj-section>
diff --git a/testData/inspection/color/invalidColorName.mjml b/testData/inspection/color/invalidColorName.mjml
index edfa785..6c16f9e 100644
--- a/testData/inspection/color/invalidColorName.mjml
+++ b/testData/inspection/color/invalidColorName.mjml
@@ -1,3 +1,3 @@
 <mj-section
-    <error descr="Invalid color specification, either the color name, hex or rgb notation can be used">background-color="reeed"</error>
+    <warning descr="Invalid color specification, either the color name, hex or rgb notation can be used">background-color="reeed"</warning>
 ></mj-section>
diff --git a/testData/inspection/color/invalidHexColor.mjml b/testData/inspection/color/invalidHexColor.mjml
index 9197bf9..0b009a9 100644
--- a/testData/inspection/color/invalidHexColor.mjml
+++ b/testData/inspection/color/invalidHexColor.mjml
@@ -1,3 +1,3 @@
 <mj-section
-    <error descr="Invalid color specification, either the color name, hex or rgb notation can be used">background-color="#ff"</error>
+    <warning descr="Invalid color specification, either the color name, hex or rgb notation can be used">background-color="#ff"</warning>
 ></mj-section>
diff --git a/testData/inspection/path/invalidMjmlFile.mjml b/testData/inspection/path/invalidMjmlFile.mjml
index ba2808c..cde68a3 100644
--- a/testData/inspection/path/invalidMjmlFile.mjml
+++ b/testData/inspection/path/invalidMjmlFile.mjml
@@ -1,3 +1,3 @@
 <mj-include
- <error descr="_include.txt is not resolving to a valid mjml file">path="_include.txt"</error>
+ <warning descr="_include.txt is not resolving to a valid mjml file">path="_include.txt"</warning>
 />
diff --git a/testData/inspection/path/nonExistingPath.mjml b/testData/inspection/path/nonExistingPath.mjml
index 745d4aa..3304293 100644
--- a/testData/inspection/path/nonExistingPath.mjml
+++ b/testData/inspection/path/nonExistingPath.mjml
@@ -1 +1 @@
-<mj-include <error descr="nonExistent.mjml is not resolving to a valid mjml file">path="nonExistent.mjml"</error> />
+<mj-include <warning descr="nonExistent.mjml is not resolving to a valid mjml file">path="nonExistent.mjml"</warning> />