diff --git a/packages/@aws-cdk/cfnspec/build-tools/create-missing-libraries.ts b/packages/@aws-cdk/cfnspec/build-tools/create-missing-libraries.ts
index 8d06fe1148967..6c0ac50aa9ee9 100644
--- a/packages/@aws-cdk/cfnspec/build-tools/create-missing-libraries.ts
+++ b/packages/@aws-cdk/cfnspec/build-tools/create-missing-libraries.ts
@@ -295,12 +295,11 @@ async function main() {
     await addDependencyToMegaPackage(path.join('@aws-cdk', 'cloudformation-include'), module.packageName, version, ['dependencies', 'peerDependencies']);
     await addDependencyToMegaPackage('aws-cdk-lib', module.packageName, version, ['devDependencies']);
     await addDependencyToMegaPackage('monocdk', module.packageName, version, ['devDependencies']);
-    await addDependencyToMegaPackage('decdk', module.packageName, version, ['dependencies']);
   }
 }
 
 /**
- * A few of our packages (e.g., decdk, aws-cdk-lib) require a dependency on every service package.
+ * A few of our packages (e.g., aws-cdk-lib) require a dependency on every service package.
  * This automates adding the dependency (and peer dependency) to the package.json.
  */
 async function addDependencyToMegaPackage(megaPackageName: string, packageName: string, version: string, dependencyTypes: string[]) {
diff --git a/packages/@aws-cdk/cfnspec/build-tools/update.sh b/packages/@aws-cdk/cfnspec/build-tools/update.sh
index 9cb2376f1104e..449825636182d 100755
--- a/packages/@aws-cdk/cfnspec/build-tools/update.sh
+++ b/packages/@aws-cdk/cfnspec/build-tools/update.sh
@@ -89,8 +89,7 @@ node ${scriptdir}/create-missing-libraries.js || {
     exit 1
 }
 
-# update decdk dep list
-(cd ${scriptdir}/../../../decdk && node ./deps.js || true)
+# update monocdk dep list
 (cd ${scriptdir}/../../../monocdk && yarn gen || true)
 
 # append old changelog after new and replace as the last step because otherwise we will not be idempotent
diff --git a/packages/@aws-cdk/cloudformation-include/build.js b/packages/@aws-cdk/cloudformation-include/build.js
index 454a10a5014d5..ab4d071b6cf21 100644
--- a/packages/@aws-cdk/cloudformation-include/build.js
+++ b/packages/@aws-cdk/cloudformation-include/build.js
@@ -1,7 +1,6 @@
 /**
  * This build file has two purposes:
- *   1. It adds a dependency on each @aws-cdk/aws-xyz package with L1s to this package,
- *     similarly to how deps.js does for decdk.
+ *   1. It adds a dependency on each @aws-cdk/aws-xyz package with L1s to this package.
  *   2. It generates the file cfn-types-2-classes.json that contains a mapping
  *     between the CloudFormation type and the fully-qualified name of the L1 class,
  *     used in the logic of the CfnInclude class.
diff --git a/scripts/align-version.sh b/scripts/align-version.sh
index e48e2dd421990..1a0709c9793b5 100755
--- a/scripts/align-version.sh
+++ b/scripts/align-version.sh
@@ -19,7 +19,6 @@ marker=$(node -p "require('./scripts/resolve-version').marker.replace(/\./g, '\\
 # Exclude a couple of specific ones that we don't care about.
 package_jsons=$(find . -name package.json |\
     grep -v node_modules |\
-    grep -v packages/decdk/test/fixture/package.json |\
     grep -v .github/actions/prlinter/package.json)
 
 if grep -l "[^0-9]${marker}" $package_jsons; then
diff --git a/scripts/compile-samples b/scripts/compile-samples
index a253f3ffaa21b..826031970a73a 100755
--- a/scripts/compile-samples
+++ b/scripts/compile-samples
@@ -5,7 +5,7 @@
 # on them you can use this script for quicker feedback.
 #
 # This could maybe have been an 'npm run' script, but it's not self-contained
-# (needs the "decdk" package to compile against and runs jsii-rosetta from the
+# (needs the "aws-cdk-lib" package to compile against and runs jsii-rosetta from the
 # repo root) so that didn't feel right. For now this is what we have.
 set -eu
 scriptdir=$(cd $(dirname $0) && pwd)
@@ -23,9 +23,9 @@ for dir in $dirs; do
         # Run jsii
         npm run build
 
-        # Run rosetta against decdk dir, failing on compilation errors
+        # Run rosetta against aws-cdk-lib dir, failing on compilation errors
         node --experimental-worker $scriptdir/../node_modules/.bin/jsii-rosetta \
-            --directory $scriptdir/../packages/decdk \
+            --directory $scriptdir/../packages/aws-cdk-lib \
             --compile \
             --output /dev/null \
             --verbose \
diff --git a/scripts/list-deprecated-apis.js b/scripts/list-deprecated-apis.js
index a4596ebdf1a69..874a42c4e36ee 100755
--- a/scripts/list-deprecated-apis.js
+++ b/scripts/list-deprecated-apis.js
@@ -48,8 +48,8 @@ class StripDeprecatedPrinter {
 
 async function main(printer) {
   const typesystem = new jsiiReflect.TypeSystem();
-  // Decdk depends on everything, so that's a perfect directory to load as closure
-  await typesystem.loadNpmDependencies(path.resolve(__dirname, '..', 'packages', 'decdk'), { validate: false });
+  // aws-cdk-lib depends on everything, so that's a perfect directory to load as closure
+  await typesystem.loadNpmDependencies(path.resolve(__dirname, '..', 'packages', 'aws-cdk-lib'), { validate: false });
 
   printer.printHeader();
 
diff --git a/scripts/run-rosetta.sh b/scripts/run-rosetta.sh
index da627fa05e4f8..1a0be40012bf9 100755
--- a/scripts/run-rosetta.sh
+++ b/scripts/run-rosetta.sh
@@ -62,14 +62,14 @@ fi
 
 #----------------------------------------------------------------------
 
-# Compile examples with respect to "decdk" directory, as all packages will
+# Compile examples with respect to "aws-cdk-lib" directory, as all packages will
 # be symlinked there so they can all be included.
 echo "💎 Extracting code samples" >&2
 time $ROSETTA extract \
     --compile \
     --verbose \
     --cache ${rosetta_cache_file} \
-    --directory packages/decdk \
+    --directory packages/aws-cdk-lib \
     ${extract_opts} \
     $(cat $jsii_pkgs_file)
 
@@ -82,7 +82,7 @@ if $infuse; then
         --compile \
         --verbose \
         --cache ${rosetta_cache_file} \
-        --directory packages/decdk \
+        --directory packages/aws-cdk-lib \
         $(cat $jsii_pkgs_file)
 fi