diff --git a/CHANGELOG.md b/CHANGELOG.md
index 2148eda..55ba7b1 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,6 @@
 ## 3.1.0 (July 11, 2021)
 
-- Updated NPM scripts to remove types files from build
+- Updated declaration file extension so it will not be included in final build
 
 ## 3.0.1 (July 11, 2021)
 
diff --git a/package.json b/package.json
index 924a75f..959c03c 100644
--- a/package.json
+++ b/package.json
@@ -47,7 +47,7 @@
     "clean": "rimraf lib",
     "prebuild": "npm run qc && npm run clean",
     "build": "tsc",
-    "postbuild": "cp README.md lib; rm -r lib/src/types",
+    "postbuild": "cp README.md lib",
     "publish:live": "npm run build && npm publish lib --tag latest",
     "publish:next": "npm run build && npm publish lib --tag next"
   },
diff --git a/src/types/color.ts b/src/types/color.d.ts
similarity index 100%
rename from src/types/color.ts
rename to src/types/color.d.ts
diff --git a/src/types/general.ts b/src/types/general.d.ts
similarity index 100%
rename from src/types/general.ts
rename to src/types/general.d.ts
diff --git a/src/types/index.ts b/src/types/index.d.ts
similarity index 100%
rename from src/types/index.ts
rename to src/types/index.d.ts
diff --git a/src/types/level.ts b/src/types/level.d.ts
similarity index 100%
rename from src/types/level.ts
rename to src/types/level.d.ts
diff --git a/src/types/nsprc.ts b/src/types/nsprc.d.ts
similarity index 100%
rename from src/types/nsprc.ts
rename to src/types/nsprc.d.ts
diff --git a/src/types/table.ts b/src/types/table.d.ts
similarity index 100%
rename from src/types/table.ts
rename to src/types/table.d.ts