diff --git a/release.sh b/release.sh
index 1f287bc839..c585708326 100755
--- a/release.sh
+++ b/release.sh
@@ -9,4 +9,51 @@ set -e
 
 cd `dirname $0`
 
+for i in matrix-js-sdk
+do
+    depver=`cat package.json | jq -r .dependencies[\"$i\"]`
+    latestver=`yarn info -s $i dist-tags.next`
+    if [ "$depver" != "$latestver" ]
+    then
+        echo "The latest version of $i is $latestver but package.json depends on $depver."
+        echo -n "Type 'u' to auto-upgrade, 'c' to continue anyway, or 'a' to abort:"
+        read resp
+        if [ "$resp" != "u" ] && [ "$resp" != "c" ]
+        then
+            echo "Aborting."
+            exit 1
+        fi
+        if [ "$resp" == "u" ]
+        then
+            echo "Upgrading $i to $latestver..."
+            yarn add -E $i@$latestver
+            git add -u
+            # The `-e` flag opens the editor and gives you a chance to check
+            # the upgrade for correctness.
+            git commit -m "Upgrade $i to $latestver" -e
+        fi
+    fi
+done
+
 exec ./node_modules/matrix-js-sdk/release.sh -z "$@"
+
+release="${1#v}"
+prerelease=0
+# We check if this build is a prerelease by looking to
+# see if the version has a hyphen in it. Crude,
+# but semver doesn't support postreleases so anything
+# with a hyphen is a prerelease.
+echo $release | grep -q '-' && prerelease=1
+
+if [ $prerelease -eq 0 ]
+then
+    # For a release, reset SDK deps back to the `develop` branch.
+    for i in matrix-js-sdk
+    do
+        echo "Resetting $i to develop branch..."
+        yarn add github:matrix-org/$i#develop
+        git add -u
+        git commit -m "Reset $i back to develop branch"
+    done
+    git push origin develop
+fi