diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 102ff93..91d0147 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -12,7 +12,7 @@ jobs:
 
     strategy:
       matrix:
-        node-version: [18.x, 17.x, 16.x, 14.x, 12.x]
+        node-version: [20.x, 18.x, 16.x, 14.x, 12.x]
 
     steps:
       - uses: actions/checkout@v2
diff --git a/changelog.md b/changelog.md
index fe0086d..1a5b58e 100644
--- a/changelog.md
+++ b/changelog.md
@@ -1,7 +1,8 @@
 # Changelog
 
-## Next
-- Changed fetching of data files to fallback to using the packaged files if the fetch request fails.
+## 2.5.6
+*2023-06-28*
+- Changed fetching of data files to fallback to using the packaged files if the fetch request fails ([#21](https://github.com/Nixinova/LinguistJS/issues/21)).
 - Fixed packaged data files having formatting issues.
 
 ## 2.5.5
diff --git a/package-lock.json b/package-lock.json
index eb79323..401a879 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
 	"name": "linguist-js",
-	"version": "2.5.5",
+	"version": "2.5.6",
 	"lockfileVersion": 2,
 	"requires": true,
 	"packages": {
 		"": {
 			"name": "linguist-js",
-			"version": "2.5.5",
+			"version": "2.5.6",
 			"license": "ISC",
 			"dependencies": {
 				"binary-extensions": "^2.2.0",
@@ -14,7 +14,7 @@
 				"common-path-prefix": "^3.0.0",
 				"cross-fetch": "^3.1.6",
 				"ignore": "^5.2.4",
-				"isbinaryfile": "^4.0.8 <5",
+				"isbinaryfile": "^4.0.10 <5",
 				"js-yaml": "^4.1.0",
 				"node-cache": "^5.1.2"
 			},
@@ -24,9 +24,9 @@
 			},
 			"devDependencies": {
 				"@types/js-yaml": "^4.0.5",
-				"@types/node": "ts5.1",
+				"@types/node": "ts5.0",
 				"deep-object-diff": "^1.1.9",
-				"typescript": "~5.1.3"
+				"typescript": "~5.0.4 <5.1"
 			},
 			"engines": {
 				"node": ">=12"
@@ -158,16 +158,16 @@
 			"integrity": "sha512-N3WMsuqV66lT30CrXNbEjx4GEwlow3v6rr4mCcv6prnfwhS01rkgyFdjPNBYd9br7LpXV1+Emh01fHnq2Gdgrw=="
 		},
 		"node_modules/typescript": {
-			"version": "5.1.3",
-			"resolved": "https://registry.npmjs.org/typescript/-/typescript-5.1.3.tgz",
-			"integrity": "sha512-XH627E9vkeqhlZFQuL+UsyAXEnibT0kWR2FWONlr4sTjvxyJYnyefgrkyECLzM5NenmKzRAy2rR/OlYLA1HkZw==",
+			"version": "5.0.4",
+			"resolved": "https://registry.npmjs.org/typescript/-/typescript-5.0.4.tgz",
+			"integrity": "sha512-cW9T5W9xY37cc+jfEnaUvX91foxtHkza3Nw3wkoF4sSlKn0MONdkdEndig/qPBWXNkmplh3NzayQzCiHM4/hqw==",
 			"dev": true,
 			"bin": {
 				"tsc": "bin/tsc",
 				"tsserver": "bin/tsserver"
 			},
 			"engines": {
-				"node": ">=14.17"
+				"node": ">=12.20"
 			}
 		},
 		"node_modules/webidl-conversions": {
@@ -277,9 +277,9 @@
 			"integrity": "sha512-N3WMsuqV66lT30CrXNbEjx4GEwlow3v6rr4mCcv6prnfwhS01rkgyFdjPNBYd9br7LpXV1+Emh01fHnq2Gdgrw=="
 		},
 		"typescript": {
-			"version": "5.1.3",
-			"resolved": "https://registry.npmjs.org/typescript/-/typescript-5.1.3.tgz",
-			"integrity": "sha512-XH627E9vkeqhlZFQuL+UsyAXEnibT0kWR2FWONlr4sTjvxyJYnyefgrkyECLzM5NenmKzRAy2rR/OlYLA1HkZw==",
+			"version": "5.0.4",
+			"resolved": "https://registry.npmjs.org/typescript/-/typescript-5.0.4.tgz",
+			"integrity": "sha512-cW9T5W9xY37cc+jfEnaUvX91foxtHkza3Nw3wkoF4sSlKn0MONdkdEndig/qPBWXNkmplh3NzayQzCiHM4/hqw==",
 			"dev": true
 		},
 		"webidl-conversions": {
diff --git a/package.json b/package.json
index 5b78469..65abbaa 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
 	"name": "linguist-js",
-	"version": "2.5.5",
+	"version": "2.5.6",
 	"description": "Analyse languages used in a folder. Powered by GitHub Linguist, although it doesn't need to be installed.",
 	"main": "dist/index.js",
 	"bin": {
@@ -44,14 +44,14 @@
 		"common-path-prefix": "^3.0.0",
 		"cross-fetch": "^3.1.6",
 		"ignore": "^5.2.4",
-		"isbinaryfile": "^4.0.8 <5",
+		"isbinaryfile": "^4.0.10 <5",
 		"js-yaml": "^4.1.0",
 		"node-cache": "^5.1.2"
 	},
 	"devDependencies": {
 		"@types/js-yaml": "^4.0.5",
-		"@types/node": "ts5.1",
+		"@types/node": "ts5.0",
 		"deep-object-diff": "^1.1.9",
-		"typescript": "~5.1.3"
+		"typescript": "^5.1"
 	}
 }