diff --git a/import_map.json b/import_map.json
index f1a135510..8d20f0a79 100644
--- a/import_map.json
+++ b/import_map.json
@@ -1,10 +1,6 @@
 {
   "imports": {
     "@deno/dnt": "jsr:@deno/dnt@^0.41.3",
-    "@hpke/core": "npm:@hpke/core@^1.3.0",
-    "@hpke/chacha20poly1305": "npm:@hpke/chacha20poly1305@^1.3.0",
-    "@hpke/dhkem-x25519": "npm:@hpke/dhkem-x25519@^1.3.0",
-    "@hpke/dhkem-x448": "npm:@hpke/dhkem-x448@^1.3.0",
     "@noble/ciphers/chacha": "npm:@noble/ciphers@^0.5.3/chacha",
     "@noble/curves/ed25519": "npm:@noble/curves@^1.4.2/ed25519",
     "@noble/curves/ed448": "npm:@noble/curves@^1.4.2/ed448",
diff --git a/npm/import_map.json b/npm/import_map.json
new file mode 100644
index 000000000..f1a135510
--- /dev/null
+++ b/npm/import_map.json
@@ -0,0 +1,20 @@
+{
+  "imports": {
+    "@deno/dnt": "jsr:@deno/dnt@^0.41.3",
+    "@hpke/core": "npm:@hpke/core@^1.3.0",
+    "@hpke/chacha20poly1305": "npm:@hpke/chacha20poly1305@^1.3.0",
+    "@hpke/dhkem-x25519": "npm:@hpke/dhkem-x25519@^1.3.0",
+    "@hpke/dhkem-x448": "npm:@hpke/dhkem-x448@^1.3.0",
+    "@noble/ciphers/chacha": "npm:@noble/ciphers@^0.5.3/chacha",
+    "@noble/curves/ed25519": "npm:@noble/curves@^1.4.2/ed25519",
+    "@noble/curves/ed448": "npm:@noble/curves@^1.4.2/ed448",
+    "@noble/curves/secp256k1": "npm:@noble/curves@^1.4.2/secp256k1",
+    "@noble/hashes/hmac": "npm:@noble/hashes@^1.4.0/hmac",
+    "@noble/hashes/sha256": "npm:@noble/hashes@^1.4.0/sha256",
+    "@noble/hashes/sha512": "npm:@noble/hashes@^1.4.0/sha512",
+    "@noble/hashes/sha3": "npm:@noble/hashes@^1.4.0/sha3",
+    "@std/assert": "jsr:@std/assert@1.0.0",
+    "@std/path": "jsr:@std/path@^1.0.3",
+    "@std/testing/bdd": "jsr:@std/testing@^1.0.0/bdd"
+  }
+}
diff --git a/npm/package-lock.json b/npm/package-lock.json
index 17e589e40..003e2198a 100644
--- a/npm/package-lock.json
+++ b/npm/package-lock.json
@@ -149,7 +149,6 @@
       "version": "1.3.1",
       "license": "MIT",
       "dependencies": {
-        "@hpke/core": "^1.3.0",
         "@noble/ciphers": "^0.5.3"
       },
       "devDependencies": {
@@ -179,8 +178,6 @@
       "version": "1.3.1",
       "license": "MIT",
       "dependencies": {
-        "@hpke/core": "^1.3.0",
-        "@hpke/dhkem-x25519": "^1.3.0",
         "@noble/curves": "^1.4.2"
       },
       "devDependencies": {
@@ -197,7 +194,6 @@
       "version": "1.3.1",
       "license": "MIT",
       "dependencies": {
-        "@hpke/core": "^1.3.0",
         "@noble/curves": "^1.4.2",
         "@noble/hashes": "^1.4.0"
       },
@@ -215,7 +211,6 @@
       "version": "1.3.1",
       "license": "MIT",
       "dependencies": {
-        "@hpke/core": "^1.3.0",
         "@noble/curves": "^1.4.2",
         "@noble/hashes": "^1.4.0"
       },
@@ -232,10 +227,6 @@
       "version": "1.3.1",
       "license": "MIT",
       "dependencies": {
-        "@hpke/chacha20poly1305": "^1.3.0",
-        "@hpke/core": "^1.3.0",
-        "@hpke/dhkem-x25519": "^1.3.0",
-        "@hpke/dhkem-x448": "^1.3.0",
         "@noble/hashes": "^1.4.0"
       },
       "devDependencies": {
@@ -252,8 +243,6 @@
       "version": "1.3.1",
       "license": "MIT",
       "dependencies": {
-        "@hpke/core": "^1.3.0",
-        "@hpke/dhkem-x25519": "^1.3.0",
         "@noble/hashes": "^1.4.0"
       },
       "devDependencies": {
diff --git a/packages/core/deno.json b/packages/core/deno.json
index e62febbaf..24d373444 100644
--- a/packages/core/deno.json
+++ b/packages/core/deno.json
@@ -43,10 +43,10 @@
     ]
   },
   "tasks": {
-    "test": "deno fmt && deno lint && deno test --import-map=../../import_map.json test -A --fail-fast --doc --coverage=coverage --parallel --allow-read",
+    "test": "deno fmt && deno lint && deno test --import-map=../../import_map.json -A --fail-fast --doc --coverage=coverage --parallel --allow-read",
     "test:cloudflare": "cd test/runtimes/cloudflare && npm install && npm link @hpke/core && npm run test",
     "cov": "deno coverage ./coverage --lcov --exclude='test'",
-    "dnt": "deno run --import-map=../../import_map.json -A dnt.ts",
+    "dnt": "deno run --import-map=../../npm/import_map.json -A dnt.ts",
     "minify": "esbuild ../../npm/packages/core/esm/mod.js --bundle --format=esm --minify"
   }
 }
diff --git a/packages/dhkem-secp256k1/deno.json b/packages/dhkem-secp256k1/deno.json
index abcad5d3c..7e209c607 100644
--- a/packages/dhkem-secp256k1/deno.json
+++ b/packages/dhkem-secp256k1/deno.json
@@ -49,7 +49,7 @@
     "test": "deno fmt && deno lint && deno test --import-map=../../import_map.json -A --fail-fast --doc --coverage=coverage --parallel --allow-read",
     "test:cloudflare": "cd test/runtimes/cloudflare && npm install && npm link @hpke/core @hpke/dhkem-secp256k1 && npm run test",
     "cov": "deno coverage ./coverage --lcov --exclude='test'",
-    "dnt": "deno run --import-map=../../import_map.json -A dnt.ts",
+    "dnt": "deno run --import-map=../../npm/import_map.json -A dnt.ts",
     "minify": "esbuild ../../npm/packages/dhkem-secp256k1/esm/dhkem-secp256k1/mod.js --bundle --format=esm --minify"
   }
 }
diff --git a/packages/dhkem-x25519/deno.json b/packages/dhkem-x25519/deno.json
index 8e91b3706..ac838d91b 100644
--- a/packages/dhkem-x25519/deno.json
+++ b/packages/dhkem-x25519/deno.json
@@ -50,7 +50,7 @@
     "test": "deno fmt && deno lint && deno test --import-map=../../import_map.json -A --fail-fast --doc --coverage=coverage --parallel --allow-read",
     "test:cloudflare": "cd test/runtimes/cloudflare && npm install && npm link @hpke/core @hpke/dhkem-x25519 && npm run test",
     "cov": "deno coverage ./coverage --lcov --exclude='test'",
-    "dnt": "deno run -A dnt.ts",
+    "dnt": "deno run --import-map=../../npm/import_map.json -A dnt.ts",
     "minify": "esbuild ../../npm/packages/dhkem-x25519/esm/dhkem-x25519/mod.js --bundle --format=esm --minify"
   }
 }
diff --git a/packages/dhkem-x448/deno.json b/packages/dhkem-x448/deno.json
index aa11cc8c0..1fa5332cc 100644
--- a/packages/dhkem-x448/deno.json
+++ b/packages/dhkem-x448/deno.json
@@ -50,7 +50,7 @@
     "test": "deno fmt && deno lint && deno test --import-map=../../import_map.json -A --fail-fast --doc --coverage=coverage --parallel --allow-read",
     "test:cloudflare": "cd test/runtimes/cloudflare && npm install && npm link @hpke/core @hpke/dhkem-x448 && npm run test",
     "cov": "deno coverage ./coverage --lcov --exclude='test'",
-    "dnt": "deno run --import-map=../../import_map.json -A dnt.ts",
+    "dnt": "deno run --import-map=../../npm/import_map.json -A dnt.ts",
     "minify": "esbuild ../../npm/packages/dhkem-x448/esm/dhkem-x448/mod.js --bundle --format=esm --minify"
   }
 }
diff --git a/packages/hpke-js/deno.json b/packages/hpke-js/deno.json
index 72f8b8f6f..ddfde81b1 100644
--- a/packages/hpke-js/deno.json
+++ b/packages/hpke-js/deno.json
@@ -49,7 +49,7 @@
     "test": "deno fmt && deno lint && deno test --import-map=../../import_map.json -A --fail-fast --doc --coverage=coverage --parallel --allow-read",
     "test:cloudflare": "cd test/runtimes/cloudflare && npm install && npm link hpke-js && npm run test",
     "cov": "deno coverage ./coverage --lcov --exclude='test'",
-    "dnt": "deno run --import-map=../../import_map.json -A dnt.ts",
+    "dnt": "deno run --import-map=../../npm/import_map.json -A dnt.ts",
     "minify": "esbuild ../../npm/packages/hpke-js/esm/hpke-js/mod.js --bundle --format=esm --minify"
   }
 }
diff --git a/packages/hybridkem-x25519-kyber768/deno.json b/packages/hybridkem-x25519-kyber768/deno.json
index 181d19f35..7effe04dd 100644
--- a/packages/hybridkem-x25519-kyber768/deno.json
+++ b/packages/hybridkem-x25519-kyber768/deno.json
@@ -49,7 +49,7 @@
     "test": "deno fmt && deno lint && deno test --import-map=../../import_map.json -A --fail-fast --doc --coverage=coverage --parallel --allow-read",
     "test:cloudflare": "cd test/runtimes/cloudflare && npm install && npm link @hpke/core @hpke/hybridkem-x25519-kyber768 && npm run test",
     "cov": "deno coverage ./coverage --lcov --exclude='test'",
-    "dnt": "deno run --import-map=../../import_map.json -A dnt.ts",
+    "dnt": "deno run --import-map=../../npm/import_map.json -A dnt.ts",
     "minify": "esbuild ../../npm/packages/hybridkem-x25519-kyber768/esm/hybridkem-x25519-kyber768/mod.js --bundle --format=esm --minify"
   }
 }