diff --git a/package-lock.json b/package-lock.json
index 527c35db5c..b5579deab6 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -4535,9 +4535,9 @@
       "dev": true
     },
     "boxednode": {
-      "version": "1.2.3",
-      "resolved": "https://registry.npmjs.org/boxednode/-/boxednode-1.2.3.tgz",
-      "integrity": "sha512-Fi/ThgA1v2gqTJ2GWCHvsl7eN6SbY9B++U34U7xaN2jHqCtNi8vJqI9RFXF8woqejoQ/PRg1vtgmqgKlk0OQEQ==",
+      "version": "1.3.0",
+      "resolved": "https://registry.npmjs.org/boxednode/-/boxednode-1.3.0.tgz",
+      "integrity": "sha512-XD5ziGB1uIATkltyxXavc1dKO1yWIuRQNlH9JF64MfAod+0uiYPKqJOP40t+G0qvP+Joks0HItkJj3dUgf9yVQ==",
       "dev": true,
       "requires": {
         "chalk": "^4.1.0",
diff --git a/package.json b/package.json
index 496fa9bd4c..9ba84eab25 100644
--- a/package.json
+++ b/package.json
@@ -75,7 +75,7 @@
     "adm-zip": "^0.4.14",
     "aws-sdk": "^2.674.0",
     "axios": "^0.19.2",
-    "boxednode": "^1.2.3",
+    "boxednode": "^1.3.0",
     "browserify": "^16.5.0",
     "chai": "^4.2.0",
     "command-exists": "^1.2.9",
diff --git a/packages/build/src/signable-compiler.ts b/packages/build/src/signable-compiler.ts
index 2adb01662b..a8c976b230 100644
--- a/packages/build/src/signable-compiler.ts
+++ b/packages/build/src/signable-compiler.ts
@@ -33,7 +33,13 @@ class SignableCompiler {
       sourceFile: this.sourceFile,
       targetFile: this.targetFile,
       nodeVersionRange: this.nodeVersionRange,
-      namespace: 'mongosh'
+      namespace: 'mongosh',
+      env: {
+        ...process.env,
+        // Custom env vars for sccache:
+        AWS_ACCESS_KEY_ID: process.env.DEVTOOLS_CI_AWS_KEY,
+        AWS_SECRET_ACCESS_KEY: process.env.DEVTOOLS_CI_AWS_SECRET
+      }
     });
   }
 }
diff --git a/scripts/docker/ubuntu16.04-build.Dockerfile b/scripts/docker/ubuntu16.04-build.Dockerfile
index 168bf41d28..433cdd367b 100644
--- a/scripts/docker/ubuntu16.04-build.Dockerfile
+++ b/scripts/docker/ubuntu16.04-build.Dockerfile
@@ -14,7 +14,10 @@ RUN add-apt-repository ppa:ubuntu-toolchain-r/test
 RUN apt-get update
 RUN apt-get -y -qq install nodejs g++-6 rpm
 
-ENV CC=gcc-6
-ENV CXX=g++-6
+# Add sccache
+RUN curl -L https://github.com/mozilla/sccache/releases/download/0.2.13/sccache-0.2.13-x86_64-unknown-linux-musl.tar.gz | tar -C /usr/local/bin -xzvf - --strip=1 sccache-0.2.13-x86_64-unknown-linux-musl/sccache
+
+ENV CC="sccache gcc-6"
+ENV CXX="sccache g++-6"
 
 ENTRYPOINT [ "bash" ]