diff --git a/.gitattributes b/.gitattributes
new file mode 100644
index 0000000..f857120
--- /dev/null
+++ b/.gitattributes
@@ -0,0 +1,8 @@
+# Ensure line endings are always Unix-style for known text files
+# GitHub Actions CI doesn't have "native" solution for this
+# See https://github.com/actions/checkout/issues/226
+*.ts text eol=lf
+*.json text eol=lf
+*.md text eol=lf
+*.tf text eol=lf
+*.txt text eol=lf
diff --git a/package-lock.json b/package-lock.json
index fb86b8b..1cf8a0c 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -4,6 +4,32 @@
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
+    "@nodelib/fs.scandir": {
+      "version": "2.1.5",
+      "resolved": "https://registry.npmjs.org/@nodelib/fs.scandir/-/fs.scandir-2.1.5.tgz",
+      "integrity": "sha512-vq24Bq3ym5HEQm2NKCr3yXDwjc7vTsEThRDnkp2DK9p1uqLR+DHurm/NOTo0KG7HYHU7eppKZj3MyqYuMBf62g==",
+      "dev": true,
+      "requires": {
+        "@nodelib/fs.stat": "2.0.5",
+        "run-parallel": "^1.1.9"
+      }
+    },
+    "@nodelib/fs.stat": {
+      "version": "2.0.5",
+      "resolved": "https://registry.npmjs.org/@nodelib/fs.stat/-/fs.stat-2.0.5.tgz",
+      "integrity": "sha512-RkhPPp2zrqDAQA/2jNhnztcPAlv64XdhIp7a7454A5ovI7Bukxgt7MX7udwAu3zg1DcpPU0rz3VV1SeaqvY4+A==",
+      "dev": true
+    },
+    "@nodelib/fs.walk": {
+      "version": "1.2.8",
+      "resolved": "https://registry.npmjs.org/@nodelib/fs.walk/-/fs.walk-1.2.8.tgz",
+      "integrity": "sha512-oGB+UxlgWcgQkgwo8GcEGwemoTFt3FIO9ababBmaGwXIoBKZ+GTy0pP185beGg7Llih/NSHSV2XAs1lnznocSg==",
+      "dev": true,
+      "requires": {
+        "@nodelib/fs.scandir": "2.1.5",
+        "fastq": "^1.6.0"
+      }
+    },
     "@tootallnate/once": {
       "version": "1.1.2",
       "resolved": "https://registry.npmjs.org/@tootallnate/once/-/once-1.1.2.tgz",
@@ -59,6 +85,16 @@
         "debug": "4"
       }
     },
+    "aggregate-error": {
+      "version": "3.1.0",
+      "resolved": "https://registry.npmjs.org/aggregate-error/-/aggregate-error-3.1.0.tgz",
+      "integrity": "sha512-4I7Td01quW/RpocfNayFdFVk1qSuoh0E7JrbRJ16nH01HhKFQ88INq9Sd+nd72zqRySlr9BmDA8xlEJ6vJMrYA==",
+      "dev": true,
+      "requires": {
+        "clean-stack": "^2.0.0",
+        "indent-string": "^4.0.0"
+      }
+    },
     "ansi-colors": {
       "version": "4.1.1",
       "resolved": "https://registry.npmjs.org/ansi-colors/-/ansi-colors-4.1.1.tgz",
@@ -102,6 +138,12 @@
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       "dev": true
     },
+    "array-union": {
+      "version": "2.1.0",
+      "resolved": "https://registry.npmjs.org/array-union/-/array-union-2.1.0.tgz",
+      "integrity": "sha512-HGyxoOTYUyCM6stUe6EJgnd4EoewAI7zMdfqO+kGjnlZmBDz/cR5pf8r/cR4Wq60sL/p0IkcjUEEPwS3GFrIyw==",
+      "dev": true
+    },
     "asn1.js": {
       "version": "5.4.1",
       "resolved": "https://registry.npmjs.org/asn1.js/-/asn1.js-5.4.1.tgz",
@@ -230,6 +272,12 @@
         "readdirp": "~3.6.0"
       }
     },
+    "clean-stack": {
+      "version": "2.2.0",
+      "resolved": "https://registry.npmjs.org/clean-stack/-/clean-stack-2.2.0.tgz",
+      "integrity": "sha512-4diC9HaTE+KRAMWhDhrGOECgWZxoevMc5TlkObMqNSsVU62PYzXZ/SMTjzyGAFF1YusgxGcSWTEXBhp0CPwQ1A==",
+      "dev": true
+    },
     "cliui": {
       "version": "7.0.4",
       "resolved": "https://registry.npmjs.org/cliui/-/cliui-7.0.4.tgz",
@@ -273,6 +321,12 @@
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       "dev": true
     },
+    "crypto-random-string": {
+      "version": "2.0.0",
+      "resolved": "https://registry.npmjs.org/crypto-random-string/-/crypto-random-string-2.0.0.tgz",
+      "integrity": "sha512-v1plID3y9r/lPhviJ1wrXpLeyUIGAZ2SHNYTEapm7/8A9nLPoyvVp3RK/EPFqn5kEznyWgYZNsRtYYIWbuG8KA==",
+      "dev": true
+    },
     "data-uri-to-buffer": {
       "version": "3.0.1",
       "resolved": "https://registry.npmjs.org/data-uri-to-buffer/-/data-uri-to-buffer-3.0.1.tgz",
@@ -315,6 +369,22 @@
         "vm2": "^3.9.3"
       }
     },
+    "del": {
+      "version": "6.0.0",
+      "resolved": "https://registry.npmjs.org/del/-/del-6.0.0.tgz",
+      "integrity": "sha512-1shh9DQ23L16oXSZKB2JxpL7iMy2E0S9d517ptA1P8iw0alkPtQcrKH7ru31rYtKwF499HkTu+DRzq3TCKDFRQ==",
+      "dev": true,
+      "requires": {
+        "globby": "^11.0.1",
+        "graceful-fs": "^4.2.4",
+        "is-glob": "^4.0.1",
+        "is-path-cwd": "^2.2.0",
+        "is-path-inside": "^3.0.2",
+        "p-map": "^4.0.0",
+        "rimraf": "^3.0.2",
+        "slash": "^3.0.0"
+      }
+    },
     "depd": {
       "version": "1.1.2",
       "resolved": "https://registry.npmjs.org/depd/-/depd-1.1.2.tgz",
@@ -326,6 +396,15 @@
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       "dev": true
     },
+    "dir-glob": {
+      "version": "3.0.1",
+      "resolved": "https://registry.npmjs.org/dir-glob/-/dir-glob-3.0.1.tgz",
+      "integrity": "sha512-WkrWp9GR4KXfKGYzOLmTuGVi1UWFfws377n9cc55/tb6DuqyF6pcQ5AbiHEshaDpY9v6oaSr2XCDidGmMwdzIA==",
+      "dev": true,
+      "requires": {
+        "path-type": "^4.0.0"
+      }
+    },
     "emoji-regex": {
       "version": "8.0.0",
       "resolved": "https://registry.npmjs.org/emoji-regex/-/emoji-regex-8.0.0.tgz",
@@ -371,11 +450,33 @@
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     },
+    "fast-glob": {
+      "version": "3.2.11",
+      "resolved": "https://registry.npmjs.org/fast-glob/-/fast-glob-3.2.11.tgz",
+      "integrity": "sha512-xrO3+1bxSo3ZVHAnqzyuewYT6aMFHRAd4Kcs92MAonjwQZLsK9d0SF1IyQ3k5PoirxTW0Oe/RqFgMQ6TcNE5Ew==",
+      "dev": true,
+      "requires": {
+        "@nodelib/fs.stat": "^2.0.2",
+        "@nodelib/fs.walk": "^1.2.3",
+        "glob-parent": "^5.1.2",
+        "merge2": "^1.3.0",
+        "micromatch": "^4.0.4"
+      }
+    },
     "fast-levenshtein": {
       "version": "2.0.6",
       "resolved": "https://registry.npmjs.org/fast-levenshtein/-/fast-levenshtein-2.0.6.tgz",
       "integrity": "sha1-PYpcZog6FqMMqGQ+hR8Zuqd5eRc="
     },
+    "fastq": {
+      "version": "1.13.0",
+      "resolved": "https://registry.npmjs.org/fastq/-/fastq-1.13.0.tgz",
+      "integrity": "sha512-YpkpUnK8od0o1hmeSc7UUs/eB/vIPWJYjKck2QKIzAf71Vm1AAQ3EbuZB3g2JIy+pg+ERD0vqI79KyZiB2e2Nw==",
+      "dev": true,
+      "requires": {
+        "reusify": "^1.0.4"
+      }
+    },
     "fd-slicer": {
       "version": "1.1.0",
       "resolved": "https://registry.npmjs.org/fd-slicer/-/fd-slicer-1.1.0.tgz",
@@ -493,6 +594,20 @@
         "is-glob": "^4.0.1"
       }
     },
+    "globby": {
+      "version": "11.1.0",
+      "resolved": "https://registry.npmjs.org/globby/-/globby-11.1.0.tgz",
+      "integrity": "sha512-jhIXaOzy1sb8IyocaruWSn1TjmnBVs8Ayhcy83rmxNJ8q2uWKCAj3CnJY+KpGSXCueAPc0i05kVvVKtP1t9S3g==",
+      "dev": true,
+      "requires": {
+        "array-union": "^2.1.0",
+        "dir-glob": "^3.0.1",
+        "fast-glob": "^3.2.9",
+        "ignore": "^5.2.0",
+        "merge2": "^1.4.1",
+        "slash": "^3.0.0"
+      }
+    },
     "graceful-fs": {
       "version": "4.2.8",
       "resolved": "https://registry.npmjs.org/graceful-fs/-/graceful-fs-4.2.8.tgz",
@@ -555,6 +670,18 @@
         "safer-buffer": ">= 2.1.2 < 3"
       }
     },
+    "ignore": {
+      "version": "5.2.0",
+      "resolved": "https://registry.npmjs.org/ignore/-/ignore-5.2.0.tgz",
+      "integrity": "sha512-CmxgYGiEPCLhfLnpPp1MoRmifwEIOgjcHXxOBjv7mY96c+eWScsOP9c112ZyLdWHi0FxHjI+4uVhKYp/gcdRmQ==",
+      "dev": true
+    },
+    "indent-string": {
+      "version": "4.0.0",
+      "resolved": "https://registry.npmjs.org/indent-string/-/indent-string-4.0.0.tgz",
+      "integrity": "sha512-EdDDZu4A2OyIK7Lr/2zG+w5jmbuk1DVBnEwREQvBzspBJkCEbRa8GxU1lghYcaGJCnRWibjDXlq779X1/y5xwg==",
+      "dev": true
+    },
     "inflight": {
       "version": "1.0.6",
       "resolved": "https://registry.npmjs.org/inflight/-/inflight-1.0.6.tgz",
@@ -611,12 +738,30 @@
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       "dev": true
     },
+    "is-path-cwd": {
+      "version": "2.2.0",
+      "resolved": "https://registry.npmjs.org/is-path-cwd/-/is-path-cwd-2.2.0.tgz",
+      "integrity": "sha512-w942bTcih8fdJPJmQHFzkS76NEP8Kzzvmw92cXsazb8intwLqPibPPdXf4ANdKV3rYMuuQYGIWtvz9JilB3NFQ==",
+      "dev": true
+    },
+    "is-path-inside": {
+      "version": "3.0.3",
+      "resolved": "https://registry.npmjs.org/is-path-inside/-/is-path-inside-3.0.3.tgz",
+      "integrity": "sha512-Fd4gABb+ycGAmKou8eMftCupSir5lRxqf4aD/vd0cD2qc4HL07OjCeuHMr8Ro4CoMaeCKDB0/ECBOVWjTwUvPQ==",
+      "dev": true
+    },
     "is-plain-obj": {
       "version": "2.1.0",
       "resolved": "https://registry.npmjs.org/is-plain-obj/-/is-plain-obj-2.1.0.tgz",
       "integrity": "sha512-YWnfyRwxL/+SsrWYfOpUtz5b3YD+nyfkHvjbcanzk8zgyO4ASD67uVMRt8k5bM4lLMDnXfriRhOpemw+NfT1eA==",
       "dev": true
     },
+    "is-stream": {
+      "version": "2.0.1",
+      "resolved": "https://registry.npmjs.org/is-stream/-/is-stream-2.0.1.tgz",
+      "integrity": "sha512-hFoiJiTl63nn+kstHGBtewWSKnQLpyb155KHheA1l39uvtO9nWIop1p3udqPcUd/xbF1VLMO4n7OI6p7RbngDg==",
+      "dev": true
+    },
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       "version": "0.1.0",
       "resolved": "https://registry.npmjs.org/is-unicode-supported/-/is-unicode-supported-0.1.0.tgz",
@@ -693,6 +838,22 @@
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       "dev": true
     },
+    "merge2": {
+      "version": "1.4.1",
+      "resolved": "https://registry.npmjs.org/merge2/-/merge2-1.4.1.tgz",
+      "integrity": "sha512-8q7VEgMJW4J8tcfVPy8g09NcQwZdbwFEqhe/WZkoIzjn/3TGDwtOCYtXGxA3O8tPzpczCCDgv+P2P5y00ZJOOg==",
+      "dev": true
+    },
+    "micromatch": {
+      "version": "4.0.4",
+      "resolved": "https://registry.npmjs.org/micromatch/-/micromatch-4.0.4.tgz",
+      "integrity": "sha512-pRmzw/XUcwXGpD9aI9q/0XOwLNygjETJ8y0ao0wdqprrzDa4YnxLcz7fQRZr8voh8V10kGhABbNcHVk5wHgWwg==",
+      "dev": true,
+      "requires": {
+        "braces": "^3.0.1",
+        "picomatch": "^2.2.3"
+      }
+    },
     "minimalistic-assert": {
       "version": "1.0.1",
       "resolved": "https://registry.npmjs.org/minimalistic-assert/-/minimalistic-assert-1.0.1.tgz",
@@ -835,6 +996,15 @@
         "p-limit": "^3.0.2"
       }
     },
+    "p-map": {
+      "version": "4.0.0",
+      "resolved": "https://registry.npmjs.org/p-map/-/p-map-4.0.0.tgz",
+      "integrity": "sha512-/bjOqmgETBYB5BoEeGVea8dmvHb2m9GLy1E9W43yeyfP6QQCZGFNa+XRceJEuDB6zqr+gKpIAmlLebMpykw/MQ==",
+      "dev": true,
+      "requires": {
+        "aggregate-error": "^3.0.0"
+      }
+    },
     "pac-proxy-agent": {
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       "resolved": "https://registry.npmjs.org/pac-proxy-agent/-/pac-proxy-agent-5.0.0.tgz",
@@ -873,6 +1043,12 @@
       "integrity": "sha1-F0uSaHNVNP+8es5r9TpanhtcX18=",
       "dev": true
     },
+    "path-type": {
+      "version": "4.0.0",
+      "resolved": "https://registry.npmjs.org/path-type/-/path-type-4.0.0.tgz",
+      "integrity": "sha512-gDKb8aZMDeD/tZWs9P6+q0J9Mwkdl6xMV8TjnGP3qJVJ06bdMgkbBlLU8IdfOsIsFz2BW1rNVT3XuNEl8zPAvw==",
+      "dev": true
+    },
     "pend": {
       "version": "1.2.0",
       "resolved": "https://registry.npmjs.org/pend/-/pend-1.2.0.tgz",
@@ -924,6 +1100,12 @@
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     },
+    "queue-microtask": {
+      "version": "1.2.3",
+      "resolved": "https://registry.npmjs.org/queue-microtask/-/queue-microtask-1.2.3.tgz",
+      "integrity": "sha512-NuaNSa6flKT5JaSYQzJok04JzTL1CA6aGhv5rfLW3PgqA+M2ChpZQnAC8h8i4ZFkBS8X5RqkDBHA7r4hej3K9A==",
+      "dev": true
+    },
     "randombytes": {
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       "resolved": "https://registry.npmjs.org/randombytes/-/randombytes-2.1.0.tgz",
@@ -970,6 +1152,30 @@
       "integrity": "sha1-jGStX9MNqxyXbiNE/+f3kqam30I=",
       "dev": true
     },
+    "reusify": {
+      "version": "1.0.4",
+      "resolved": "https://registry.npmjs.org/reusify/-/reusify-1.0.4.tgz",
+      "integrity": "sha512-U9nH88a3fc/ekCF1l0/UP1IosiuIjyTh7hBvXVMHYgVcfGvt897Xguj2UOLDeI5BG2m7/uwyaLVT6fbtCwTyzw==",
+      "dev": true
+    },
+    "rimraf": {
+      "version": "3.0.2",
+      "resolved": "https://registry.npmjs.org/rimraf/-/rimraf-3.0.2.tgz",
+      "integrity": "sha512-JZkJMZkAGFFPP2YqXZXPbMlMBgsxzE8ILs4lMIX/2o0L9UBw9O/Y3o6wFw/i9YLapcUJWwqbi3kdxIPdC62TIA==",
+      "dev": true,
+      "requires": {
+        "glob": "^7.1.3"
+      }
+    },
+    "run-parallel": {
+      "version": "1.2.0",
+      "resolved": "https://registry.npmjs.org/run-parallel/-/run-parallel-1.2.0.tgz",
+      "integrity": "sha512-5l4VyZR86LZ/lDxZTR6jqL8AFE2S0IFLMP26AbjsLVADxHdhB/c0GUsH+y39UfCi3dzz8OlQuPmnaJOMoDHQBA==",
+      "dev": true,
+      "requires": {
+        "queue-microtask": "^1.2.2"
+      }
+    },
     "safe-buffer": {
       "version": "5.2.1",
       "resolved": "https://registry.npmjs.org/safe-buffer/-/safe-buffer-5.2.1.tgz",
@@ -1003,6 +1209,12 @@
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     },
+    "slash": {
+      "version": "3.0.0",
+      "resolved": "https://registry.npmjs.org/slash/-/slash-3.0.0.tgz",
+      "integrity": "sha512-g9Q1haeby36OSStwb4ntCGGGaKsaVSjQ68fBxoQcutl5fS1vuY18H3wSt3jFyFtrkx+Kz0V1G85A4MyAdDMi2Q==",
+      "dev": true
+    },
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@@ -1087,6 +1299,25 @@
         "has-flag": "^4.0.0"
       }
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+    "temp-dir": {
+      "version": "2.0.0",
+      "resolved": "https://registry.npmjs.org/temp-dir/-/temp-dir-2.0.0.tgz",
+      "integrity": "sha512-aoBAniQmmwtcKp/7BzsH8Cxzv8OL736p7v1ihGb5e9DJ9kTwGWHrQrVB5+lfVDzfGrdRzXch+ig7LHaY1JTOrg==",
+      "dev": true
+    },
+    "tempy": {
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/tempy/-/tempy-1.0.1.tgz",
+      "integrity": "sha512-biM9brNqxSc04Ee71hzFbryD11nX7VPhQQY32AdDmjFvodsRFz/3ufeoTZ6uYkRFfGo188tENcASNs3vTdsM0w==",
+      "dev": true,
+      "requires": {
+        "del": "^6.0.0",
+        "is-stream": "^2.0.0",
+        "temp-dir": "^2.0.0",
+        "type-fest": "^0.16.0",
+        "unique-string": "^2.0.0"
+      }
+    },
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@@ -1128,12 +1359,27 @@
         "prelude-ls": "~1.1.2"
       }
     },
+    "type-fest": {
+      "version": "0.16.0",
+      "resolved": "https://registry.npmjs.org/type-fest/-/type-fest-0.16.0.tgz",
+      "integrity": "sha512-eaBzG6MxNzEn9kiwvtre90cXaNLkmadMWa1zQMs3XORCXNbsH/OewwbxC5ia9dCxIxnTAsSxXJaa/p5y8DlvJg==",
+      "dev": true
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     "typescript": {
       "version": "4.6.2",
       "resolved": "https://registry.npmjs.org/typescript/-/typescript-4.6.2.tgz",
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       "dev": true
     },
+    "unique-string": {
+      "version": "2.0.0",
+      "resolved": "https://registry.npmjs.org/unique-string/-/unique-string-2.0.0.tgz",
+      "integrity": "sha512-uNaeirEPvpZWSgzwsPGtU2zVSTrn/8L5q/IexZmH0eH6SA73CmAA5U4GwORTxQAZs95TAXLNqeLoPPNO5gZfWg==",
+      "dev": true,
+      "requires": {
+        "crypto-random-string": "^2.0.0"
+      }
+    },
     "universalify": {
       "version": "0.1.2",
       "resolved": "https://registry.npmjs.org/universalify/-/universalify-0.1.2.tgz",
diff --git a/package.json b/package.json
index bd081d4..92661f9 100644
--- a/package.json
+++ b/package.json
@@ -33,6 +33,7 @@
     "@types/node": "^14.18.10",
     "@types/yauzl": "^2.9.2",
     "mocha": "^9.2.0",
+    "tempy": "^1.0.1",
     "ts-node": "^9.1.1",
     "typescript": "^4.2.4"
   }
diff --git a/src/index.test.ts b/src/index.test.ts
index 9cfe86b..7750cde 100644
--- a/src/index.test.ts
+++ b/src/index.test.ts
@@ -1,11 +1,38 @@
 import * as assert from 'assert';
 import * as path from 'path';
+import * as fs from 'fs';
+import * as tempy from 'tempy';
 
-import { Release, getRelease } from './index';
+
+import { Release } from './index';
 
 describe('LS installer', () => {
+	let release: Release;
+
+	before(() => {
+		release = new Release({
+			name: 'terraform-ls',
+			version: '0.25.2',
+			shasums: 'terraform-ls_0.25.2_SHA256SUMS',
+			shasums_signature: 'terraform-ls_0.25.2_SHA256SUMS.sig',
+			shasums_signatures: [
+				'terraform-ls_0.25.2_SHA256SUMS.72D7468F.sig',
+				'terraform-ls_0.25.2_SHA256SUMS.sig',
+			],
+			builds: [
+				{
+					name: 'terraform-ls',
+					version: '0.25.2',
+					os: 'darwin',
+					arch: 'amd64',
+					filename: 'terraform-ls_0.25.2_darwin_amd64.zip',
+					url: 'https://releases.hashicorp.com/terraform-ls/0.25.2/terraform-ls_0.25.2_darwin_amd64.zip',
+				},
+			],
+		});
+	});
+
 	it('should calculate correct file sha256 sum', async () => {
-		const release = new Release({ name: "terraform-ls", version: "1.0.0" });
 		const expectedSum = "0314c6a66b059bde92c5ed0f11601c144cbd916eff6d1241b5b44e076e5888dc";
 		const testPath = path.resolve(__dirname, "..", "testFixture", "shasumtest.txt");
 
@@ -13,4 +40,25 @@ describe('LS installer', () => {
 		assert.strictEqual(sum, expectedSum);
 	});
 
+	it('should download the correct sha256 sum', async () => {
+		const expectedSum = '8629ccc47ee8d4dfe6d23efb93b293948a088a936180d07d3f2ed118f6dd64a5';
+
+		const remoteSum = await release.downloadSha256Sum(
+			release.builds[0].filename
+		);
+		assert.strictEqual(remoteSum, expectedSum);
+	});
+
+	it('should download the release', async () => {
+		const build = release.getBuild('darwin', 'amd64');
+		const tmpDir = tempy.directory();
+		const zipFile = path.resolve(tmpDir, `terraform-ls_v${release.version}.zip`);
+
+		await release.download(build.url, zipFile, 'js-releases/mocha-test');
+		await release.verify(zipFile, build.filename);
+
+		fs.rmSync(tmpDir, {
+			recursive: true
+		});
+	}).timeout(20 * 1000) // increase timeout for file download
 });
diff --git a/src/index.ts b/src/index.ts
index 472a08b..8b1cfdd 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -2,9 +2,12 @@ import * as crypto from 'crypto';
 import * as fs from 'fs';
 import * as openpgp from 'openpgp';
 import * as semver from 'semver';
+import * as stream from 'stream';
 import * as yauzl from 'yauzl';
+import { promisify } from 'util';
 import { request } from './utils';
 
+const finished = promisify(stream.finished);
 const hashiPublicKeyId = '72D7468F';
 const hashiPublicKey = `-----BEGIN PGP PUBLIC KEY BLOCK-----
 
@@ -158,23 +161,18 @@ export class Release {
 			this.shasums_signature = release.shasums_signature;
 		}
 	}
-	
+
 	public getBuild(platform: string, arch: string): Build {
 		return this.builds.find(b => b.os === platform && b.arch === arch);
 	}
 
-	public download(downloadUrl: string, installPath: string, identifier: string): Promise<void> {
+	public async download(downloadUrl: string, installPath: string, identifier: string): Promise<void> {
 		const headers = { 'User-Agent': identifier };
+		const writer = fs.createWriteStream(installPath);
 
-		return new Promise<void>(async (resolve, reject) => {
-			try {
-				const result  = await request(downloadUrl, {headers: {...headers}, responseType: 'stream'});
-				result.pipe(fs.createWriteStream(installPath))
-				resolve();
-			} catch (e) {
-				return reject(e.message);
-			}
-		});
+		const result = await request(downloadUrl, { headers: { ...headers }, responseType: 'stream' });
+		result.pipe(writer);
+		await finished(writer);
 	}
 
 	public async verify(pkg: string, buildName: string): Promise<void> {
@@ -200,8 +198,12 @@ export class Release {
 
 	async downloadSha256Sum(buildName: string): Promise<string> {
 		const [shasumsResponse, shasumsSignature] = await Promise.all([
-			request(`${releasesUrl}/${this.name}/${this.version}/${this.shasums}`),
-			request(`${releasesUrl}/${this.name}/${this.version}/${this.shasums_signature}`),
+			request(`${releasesUrl}/${this.name}/${this.version}/${this.shasums}`, {
+				responseType: 'text'
+			}),
+			request(`${releasesUrl}/${this.name}/${this.version}/${this.shasums_signature}`, {
+				responseType: 'arraybuffer'
+			}),
 		]);
 		const publicKey = await openpgp.readKey({ armoredKey: hashiPublicKey });
 		const signature = await openpgp.readSignature({ binarySignature: Buffer.from(shasumsSignature, 'hex') });