diff --git a/package.json b/package.json
index 2ba1cbdb24..13d974eb3d 100644
--- a/package.json
+++ b/package.json
@@ -77,7 +77,8 @@
         "patches-reapply": "cd ./yarn-linked-dependencies/matrix-js-sdk; git checkout .; cd ../..; ./scripts/tchap/apply_patches.sh",
         "patch-make": "node scripts/tchap/makePatch.ts",
         "analyse:webpack-bundles": "webpack-bundle-analyzer webpack-stats.json webapp",
-        "update:jitsi": "curl -s https://meet.element.io/libs/external_api.min.js > ./res/jitsi_external_api.min.js"
+        "update:jitsi": "curl -s https://meet.element.io/libs/external_api.min.js > ./res/jitsi_external_api.min.js",
+        "postinstall": "./scripts/tchap/postinstall.sh"
     },
     "resolutions": {
         "@types/react-dom": "17.0.21",
diff --git a/scripts/tchap/install-yarn-linked-repositories.sh b/scripts/tchap/install-yarn-linked-repositories.sh
index bba77f1d63..08a01d0f01 100755
--- a/scripts/tchap/install-yarn-linked-repositories.sh
+++ b/scripts/tchap/install-yarn-linked-repositories.sh
@@ -42,30 +42,13 @@ rm -R examples/
 
 popd
 
-# :TCHAP: we don't use this.
-# Also set up matrix-analytics-events so we get the latest from
-# the main branch or a branch with matching name
-#./scripts/fetchdep.sh matrix-org matrix-analytics-events main
-#pushd matrix-analytics-events
-#yarn link
-#yarn install --pure-lockfile
-#yarn build:ts
-#popd
-
-# # Now set up the react-sdk
-# ../scripts/tchap/fetchdep.with.version.sh matrix-org matrix-react-sdk $MATRIX_REACT_SDK_VERSION
-# pushd matrix-react-sdk
-# yarn unlink # :TCHAP: for local build, undo previous links if present.
-# yarn link
-# yarn link matrix-js-sdk
-# #yarn link @matrix-org/analytics-events # :TCHAP: we don't use this
-# yarn install --pure-lockfile
-# popd
-cd ../linked-dependencies/matrix-react-sdk
+cd ../linked-dependencies
+pushd matrix-react-sdk
 yarn unlink # :TCHAP: for local build, undo previous links if present.
 yarn link
 yarn link matrix-js-sdk
 yarn install --pure-lockfile
+popd
 
 
 # :TCHAP: yarn-link modules
diff --git a/scripts/tchap/postinstall.sh b/scripts/tchap/postinstall.sh
new file mode 100755
index 0000000000..88d8d00839
--- /dev/null
+++ b/scripts/tchap/postinstall.sh
@@ -0,0 +1,18 @@
+#!/bin/bash
+set -x
+
+# This postinstall script is to make sure we use the linked-dependencies module for matrx-react-sdk
+
+./scripts/tchap/apply_patches.sh
+
+cd linked-dependencies
+pushd matrix-react-sdk
+yarn unlink # :TCHAP: for local build, undo previous links if present.
+yarn link
+yarn install --pure-lockfile
+popd
+
+cd ..
+# Link the layers into element-web
+yarn link matrix-react-sdk
+