diff --git a/docs/build-docs.sh b/docs/build-docs.sh
index d411b6fd006ba..05307df0ee272 100755
--- a/docs/build-docs.sh
+++ b/docs/build-docs.sh
@@ -51,7 +51,7 @@ echo "Generating reference docs toctree under ${refs_index}..."
 cat ${refs_index}.template > ${refs_index}
 ls -1 ${refdocsdir} | grep '.rst$' | sed -e 's/\.rst//' | sort | xargs -I{} echo "   ${refdocs}/{}" >> ${refs_index}
 
-export CDK_VERSION=$(cdk-version || echo "0.0.0.0")
+export CDK_VERSION=$(../tools/pkgtools/bin/cdk-version)
 echo "Set CDK_VERSION=${CDK_VERSION} (consumed by conf.py)..."
 
 sphinx-build -b html $staging $output
diff --git a/docs/src/getting-started.rst b/docs/src/getting-started.rst
index a531becf71ccb..bc5f8fb955539 100644
--- a/docs/src/getting-started.rst
+++ b/docs/src/getting-started.rst
@@ -795,7 +795,7 @@ Configure the bucket to use KMS managed encryption:
 
             new Bucket(this, "MyFirstBucket", BucketProps.builder()
                     .withVersioned(true)
-                    .withEncryption("MANAGED")
+                    .withEncryption(BucketEncryption.KmsManaged)
                     .build());
 
 Compile the program:
diff --git a/tools/pkgtools/bin/cdk-version b/tools/pkgtools/bin/cdk-version
index fd5d3921cb897..d86a2a26d9df5 100755
--- a/tools/pkgtools/bin/cdk-version
+++ b/tools/pkgtools/bin/cdk-version
@@ -1,2 +1,2 @@
-#!/bin/bash
-cat ../../lerna.json | grep "version" | xargs | cut -d" " -f2
+#!/usr/bin/env node
+console.log(require('../../../lerna.json').version);