diff --git a/build-matrix.html b/build-matrix.html
index 395f9a3d..366f9a04 100644
--- a/build-matrix.html
+++ b/build-matrix.html
@@ -739,7 +739,7 @@ feel free to submit a pull request.
 
 <tr>
  <th class="row">gendef</th>
- <td>4.0.5</td>
+ <td>4.0.6</td>
       <td class="supported">&#x2713;</td>
       <td class="supported">&#x2713;</td>
       <td class="supported">&#x2713;</td>
@@ -2229,7 +2229,7 @@ feel free to submit a pull request.
 
 <tr>
  <th class="row">mingw-w64</th>
- <td>4.0.5</td>
+ <td>4.0.6</td>
    <td class="unsupported">&#x2717;</td>
    <td class="unsupported">&#x2717;</td>
    <td class="unsupported">&#x2717;</td>
@@ -3899,7 +3899,7 @@ feel free to submit a pull request.
 
 <tr>
  <th class="row">widl</th>
- <td>4.0.5</td>
+ <td>4.0.6</td>
       <td class="supported">&#x2713;</td>
       <td class="supported">&#x2713;</td>
       <td class="supported">&#x2713;</td>
diff --git a/versions.json b/versions.json
index 3c97131b..60b509fc 100644
--- a/versions.json
+++ b/versions.json
@@ -69,7 +69,7 @@
     "gdal": "2.0.2",
     "gdb": "7.11",
     "gdk-pixbuf": "2.32.3",
-    "gendef": "4.0.5",
+    "gendef": "4.0.6",
     "geoip-database": "20150317-1",
     "geos": "3.4.2",
     "gettext": "0.19.7",
@@ -218,7 +218,7 @@
     "lzo": "2.09",
     "matio": "1.5.2",
     "mdbtools": "0.7.1",
-    "mingw-w64": "4.0.5",
+    "mingw-w64": "4.0.6",
     "miniupnpc": "1.9",
     "minizip": "0b46a2b",
     "mman-win32": "b7ec370",
@@ -385,7 +385,7 @@
     "waf": "1.8.17",
     "wavpack": "4.75.2",
     "wget": "1.17.1",
-    "widl": "4.0.5",
+    "widl": "4.0.6",
     "winpcap": "4_1_3",
     "wt": "3.3.5",
     "wxwidgets": "3.0.2",