diff --git a/extensions/construct-1.1.1.zip b/extensions/construct-1.1.1.zip
new file mode 100644
index 0000000..3644d02
Binary files /dev/null and b/extensions/construct-1.1.1.zip differ
diff --git a/libraries.conf b/libraries.conf
index e2f9f7a..ae89070 100644
--- a/libraries.conf
+++ b/libraries.conf
@@ -37,6 +37,14 @@ NOTE: This extension is a work in progress.  Please visit the extension's homepa
     version:          "0.1.1"
     homepage:         "https://github.com/NetLogo/BehaviorSpace-Extension"
   }
+  {
+    name: "Construct"
+    codeName: "construct"
+    shortDescription: "Draw a model's run as an animated 3D hologram, a 3D model or a film"
+    longDescription: """Type construct:run in the Command Center: the model runs as its buttons do, the run is recorded, and it opens in the browser as a construct, an animated 3D hologram in which height is time, with a legend and a replay bar. Every turtle's path rises through time; a network shows each node risen to when it changed; two quantities cycle around each other; turtles that flash on and off fall into step; a change spreads over the patches. The commands one by one (construct:start, track-turtles, track-reporter, track-patches, record, draw) choose what is recorded and how it is drawn. A run can also leave as a 3D model (glTF) and, with Blender, as a film. NetLogo 3D runs are recorded with their heights. Recording needs only NetLogo; drawing needs Python 3.10 or newer (Construct itself is in the zip, and nothing is downloaded)."""
+    version: "1.1.1"
+    homepage: "https://github.com/rtmandreyev/construct/tree/main/hosts/netlogo"
+  }
   {
     name: "CSV"
     codeName: "csv"