diff --git a/langs/qsharp.yaml b/langs/qsharp.yaml
index 6155b1f..14c6224 100644
--- a/langs/qsharp.yaml
+++ b/langs/qsharp.yaml
@@ -9,9 +9,9 @@ install:
   # 3.x of the .NET SDK. Not sure why.
   prepare: &install-dotnet
     preface: |
-      sudo --preserve-env=DEBIAN_FRONTEND apt-get update
       wget "https://packages.microsoft.com/config/ubuntu/${ubuntu_ver}/packages-microsoft-prod.deb"
       sudo --preserve-env=DEBIAN_FRONTEND apt-get install ./packages-microsoft-prod.deb
+      sudo --preserve-env=DEBIAN_FRONTEND apt-get update
     apt:
       - $(grep-aptavail -wF Package "dotnet-sdk-3\.[0-9.]+" -s Package -n | sort -Vr | head -n1)
   <<: *install-dotnet
@@ -33,6 +33,10 @@ install:
     cp -R * "${HOME}/.dotnet" "${HOME}/.nuget" "${pkg}/opt/qsharp/skel/"
     rm "${pkg}/opt/qsharp/skel/main/Program.qs"
     chmod -R a=u,go-w "${pkg}/opt/qsharp/skel"
+  manualInstall: |
+    wget "https://packages.microsoft.com/config/ubuntu/${ubuntu_ver}/packages-microsoft-prod.deb"
+    sudo --preserve-env=DEBIAN_FRONTEND apt-get update
+    sudo --preserve-env=DEBIAN_FRONTEND apt-get install ./packages-microsoft-prod.deb
 
 setup: |
   shopt -s dotglob
diff --git a/tools/generate-build-script.js b/tools/generate-build-script.js
index 0f9fd08..d594090 100644
--- a/tools/generate-build-script.js
+++ b/tools/generate-build-script.js
@@ -340,6 +340,9 @@ latest_release() {
   if (parts.join("\n\n").includes("ubuntu_name")) {
     parts.unshift(`ubuntu_name="$(lsb_release -cs)"`);
   }
+  if (parts.join("\n\n").includes("ubuntu_ver")) {
+    parts.unshift(`ubuntu_ver="$(lsb_release -rs)"`);
+  }
   if (install && install.disallowCI) {
     parts.unshift(`\
 if [[ -n "\${CI:-}" ]]; then
@@ -372,7 +375,7 @@ function makeInstallScript(langConfig) {
   let parts = [];
   const { id, install } = langConfig;
   if (install) {
-    const { apt, cert, aptKey, aptRepo } = install;
+    const { apt, cert, aptKey, aptRepo, manualInstall } = install;
     if (apt && apt.filter((pkg) => pkg.includes(":i386")).length > 0) {
       parts.push(`\
 sudo dpkg --add-architecture i386`);
@@ -408,10 +411,16 @@ sudo dpkg --add-architecture i386`);
 ${aptRepo.join("\n")}
 EOF`);
     }
+    if (manualInstall) {
+      parts.push(manualInstall);
+    }
   }
   if (parts.join("\n\n").includes("ubuntu_name")) {
     parts.unshift(`ubuntu_name="$(lsb_release -cs)"`);
   }
+  if (parts.join("\n\n").includes("ubuntu_ver")) {
+    parts.unshift(`ubuntu_name="$(lsb_release -rs)"`);
+  }
   parts.unshift(`\
 #!/usr/bin/env bash
 
diff --git a/tools/jsonschema.yaml b/tools/jsonschema.yaml
index c21c5fd..168357d 100644
--- a/tools/jsonschema.yaml
+++ b/tools/jsonschema.yaml
@@ -627,6 +627,9 @@ properties:
       manual:
         type: string
         minLength: 1
+      manualInstall:
+        type: string
+        minLength: 1
       deb:
         type: array
         items: