diff --git a/src/zen/boosts/zen-boost-editor.inc.xhtml b/src/zen/boosts/zen-boost-editor.inc.xhtml
index 9694be8ef..c3a857092 100644
--- a/src/zen/boosts/zen-boost-editor.inc.xhtml
+++ b/src/zen/boosts/zen-boost-editor.inc.xhtml
@@ -115,7 +115,7 @@
     <panel type="arrow" popupalign="topmiddle" id="zen-boost-advanced-color-options-panel">
       <vbox>
         <p data-l10n-id="zen-bootst-color-contrast"></p>
-        <html:input id="zen-boost-color-contrast" type="range" min="0.1" max="0.9" value="0.75" step="0.01"/>
+        <html:input id="zen-boost-color-contrast" type="range" min="0.05" max="0.9" value="0.75" step="0.01"/>
       </vbox>
       <vbox>
         <p data-l10n-id="zen-bootst-color-brightness"></p>
diff --git a/surfer.json b/surfer.json
index a17ecb94d..74a24c493 100644
--- a/surfer.json
+++ b/surfer.json
@@ -20,7 +20,7 @@
       "brandShortName": "Zen",
       "brandFullName": "Zen Browser",
       "release": {
-        "displayVersion": "1.19.10b",
+        "displayVersion": "1.19.11b",
         "github": {
           "repo": "zen-browser/desktop"
         },