diff --git a/README.md b/README.md
--- a/README.md
+++ b/README.md
@@ -35,7 +35,7 @@
  * Install a Haskell compiler, including the `cabal` tool.
  * Install a few packages
 
-        apt-get install git unzip libfile-slurp-perl libipc-run-perl libicu-dev
+        apt-get install git unzip libssl-dev libfile-slurp-perl libipc-run-perl libicu-dev
 
  * Install the dependencies:
 
diff --git a/gipeda.cabal b/gipeda.cabal
--- a/gipeda.cabal
+++ b/gipeda.cabal
@@ -1,5 +1,5 @@
 name:                gipeda
-version:             0.2
+version:             0.2.0.1
 category:            Development
 synopsis:            Git Performance Dashboard
 description:
@@ -77,7 +77,7 @@
       vector               >= 0.10 && <0.12,
       cassava              >= 0.4  && <0.5,
       yaml                 >= 0.8  && <0.9,
-      aeson                >= 0.7  && <0.11,
+      aeson                >= 0.7  && <0.12,
       scientific           >= 0.3  && <0.4,
       gitlib               >= 3.1  && <3.2,
       gitlib-libgit2,
diff --git a/site/js/gipeda.js b/site/js/gipeda.js
--- a/site/js/gipeda.js
+++ b/site/js/gipeda.js
@@ -361,12 +361,14 @@
                     res.change = "- " + (-percS) + "%";
                 }
 
-                if (Math.abs(perc) >= s.threshold) {
-                    if (perc >= 0) {
+                var th_up = s.threshold;
+                var th_down = (1-(1/(1+s.threshold/100)))*100;
+
+                if (perc >= 0 && perc > th_up) {
                         res.changeType = "Improvement";
-                    } else {
+                }
+                if (perc < 0 && -perc > th_down) {
                         res.changeType = "Regression";
-                    }
                 }
             }
         } else if (s.type == "small integral") {
diff --git a/src/ReportTypes.hs b/src/ReportTypes.hs
--- a/src/ReportTypes.hs
+++ b/src/ReportTypes.hs
@@ -165,12 +165,16 @@
     change | abs perc < 0.01 = "="
            | perc  >= 0 = printf "+ %.2f%%" perc
            | perc  <  0 = printf "- %.2f%%" (-perc)
-    typ | abs perc < th = Boring
+    typ | perc >= 0,  perc < th_up = Boring
+        | perc <  0, -perc < th_down = Boring
         | perc  >= 0 = Improvement
         | perc  <  0 = Regression
 
     perc = 100 * ((f2 - f1) / f1)
-    th = S.threshold s
+    th_up = S.threshold s
+    -- Adjusted threshold, to make sure that the inverse change is flagged
+    -- equivalently
+    th_down = (1-(1/(1+S.threshold s/100)))*100
 
 toFloat :: BenchValue -> Double
 toFloat (I i) = fromIntegral i