diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 225442a..d2d2b80 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -23,6 +23,7 @@ jobs:
 
       - uses: actions/checkout@v3
         with:
+          fetch-depth: 0
           token: ${{ secrets.TINKOFF_BOT_PAT }}
 
       - uses: actions/setup-node@v3
@@ -36,6 +37,9 @@ jobs:
       - name: Build
         run: npm run build
 
+      - name: Copy declaration files
+        run: npm run copy-declaration-files
+
       - name: Release
         run: npm run release
         env:
diff --git a/package.json b/package.json
index fd10cdc..aaf00df 100644
--- a/package.json
+++ b/package.json
@@ -10,7 +10,8 @@
     "prebenchmark": "npm install --no-save ts-node lodash ramda lazy.js underscore",
     "docs": "node ./generate/docs/index.js",
     "test": "jest --coverage",
-    "test:ci": "npm run test -- --maxWorkers=50%"
+    "test:ci": "npm run test -- --maxWorkers=50%",
+    "copy-declaration-files": "node tools/copy-declaration-files.js"
   },
   "description": "Fast, small and purely functional utility library",
   "repository": "https://github.com/Tinkoff/utils.js",
@@ -23,6 +24,11 @@
     "curry",
     "performance"
   ],
+  "files": [
+    "build",
+    ".npmignore",
+    "CHANGELOG.md"
+  ],
   "sideEffects": false,
   "license": "Apache-2.0",
   "devDependencies": {
diff --git a/tools/copy-declaration-files.js b/tools/copy-declaration-files.js
new file mode 100644
index 0000000..a285aba
--- /dev/null
+++ b/tools/copy-declaration-files.js
@@ -0,0 +1,14 @@
+const path = require('path');
+const fsExtra = require('fs-extra');
+const recursiveReadSync = require('recursive-readdir-sync');
+
+Promise.all(
+    recursiveReadSync(path.join(__dirname, '..', 'ts_temp'))
+        .filter(fileName => fileName.endsWith('.d.ts'))
+        .map(fileName =>
+            fsExtra.copy(
+                fileName,
+                fileName.replace('ts_temp', 'build')
+            )
+        )
+);