diff --git a/packages/ctl/src/commands.js b/packages/ctl/src/commands.js
index 81400b8d..3ee812c7 100644
--- a/packages/ctl/src/commands.js
+++ b/packages/ctl/src/commands.js
@@ -875,7 +875,7 @@ modPackCommands.add(new libCommand.Command({
 			if (field === "mods") {
 				print(`${field}:`);
 				for (let entry of value) {
-					print(`  ${entry.name} ${entry.version}${entry.hash ? ` (${entry.hash})` : ""}`);
+					print(`  ${entry.name} ${entry.version}${entry.sha1 ? ` (${entry.sha1})` : ""}`);
 				}
 			} else if (field === "settings") {
 				print(`${field}:`);
@@ -958,7 +958,7 @@ function setModPackMods(modPack, mods) {
 		if (sha1 && !/^[0-9a-f]{40}$/.test(sha1)) {
 			throw new libErrors.CommandError("sha1 must be a 40 digit lower case hex string");
 		}
-		modPack.mods.set(name, { name, version, hash: sha1 ? `sha1:${sha1}` : undefined });
+		modPack.mods.set(name, { name, version, sha1 });
 	}
 }
 
diff --git a/packages/lib/data/ModInfo.js b/packages/lib/data/ModInfo.js
index e1949d0c..e3bcce46 100644
--- a/packages/lib/data/ModInfo.js
+++ b/packages/lib/data/ModInfo.js
@@ -111,10 +111,10 @@ class ModInfo {
 	size = 0;
 
 	/**
-	 * Hash of this mod
+	 * SHA1 hash of this mod
 	 * @type {string=}
 	 */
-	hash;
+	sha1;
 
 	/**
 	 * True if this mod has been deleted
@@ -147,7 +147,7 @@ class ModInfo {
 			...this.infoJsonSchema.properties,
 			"filename": { type: "string" },
 			"size": { type: "integer" },
-			"hash": { type: "string" },
+			"sha1": { type: "string" },
 			"is_deleted": { type: "boolean" },
 		},
 	};
@@ -169,7 +169,7 @@ class ModInfo {
 		// Additional data
 		if (json.filename) { this.filename = json.filename; }
 		if (json.size) { this.size = json.size; }
-		if (json.hash) { this.hash = json.hash; }
+		if (json.sha1) { this.sha1 = json.sha1; }
 		if (json.is_deleted) { this.isDeleted = json.is_deleted; }
 	}
 
@@ -189,7 +189,7 @@ class ModInfo {
 		}
 		if (this.filename) { json.filename = this.filename; }
 		if (this.size) { json.size = this.size; }
-		if (this.hash) { json.hash = this.hash; }
+		if (this.sha1) { json.sha1 = this.sha1; }
 		if (this.isDeleted) { json.is_deleted = this.isDeleted; }
 		return json;
 	}
@@ -215,13 +215,12 @@ class ModInfo {
 			throw new Error("Mod's info.json is not valid");
 		}
 
-		let hash = `sha1:${await libHash.hashFile(modPath)}`;
 		return new this({
 			...modInfo,
 
 			filename: path.basename(modPath),
 			size: (await fs.stat(modPath)).size,
-			hash,
+			sha1: await libHash.hashFile(modPath),
 			is_deleted: false,
 		});
 	}
diff --git a/packages/lib/data/ModPack.js b/packages/lib/data/ModPack.js
index 9dd09154..c13e6bf0 100644
--- a/packages/lib/data/ModPack.js
+++ b/packages/lib/data/ModPack.js
@@ -28,7 +28,7 @@ const ModSettingsJsonSchema = {
  * @typedef {object} module:lib/data/ModPack~ModRecord
  * @property {string} name - name of the mod.
  * @property {string} version - version of the mod.
- * @property {string} hash - hash of the zip file.
+ * @property {string} sha1 - SHA1 hash of the zip file.
  */
 const ModRecordJsonSchema = {
 	type: "object",
@@ -37,7 +37,7 @@ const ModRecordJsonSchema = {
 	properties: {
 		"name": { type: "string" },
 		"version": { type: "string" },
-		"hash": { type: "string" },
+		"sha1": { type: "string" },
 	},
 };
 
@@ -176,7 +176,7 @@ class ModPack {
 		if (json.mods && !includeHash) {
 			json.mods = json.mods.map(m => {
 				m = { ...m };
-				delete m.hash;
+				delete m.sha1;
 				return m;
 			});
 		}
diff --git a/packages/master/src/ControlConnection.js b/packages/master/src/ControlConnection.js
index bcae4226..6e9cd9a2 100644
--- a/packages/master/src/ControlConnection.js
+++ b/packages/master/src/ControlConnection.js
@@ -576,7 +576,7 @@ class ControlConnection extends BaseConnection {
 			// dependencies
 			filename: "word",
 			// size
-			hash: "word",
+			sha1: "word",
 		});
 		let factorioVersion = message.data.factorio_version;
 
diff --git a/packages/web_ui/src/components/ModDetails.jsx b/packages/web_ui/src/components/ModDetails.jsx
index f6e1b1d0..af5ebd78 100644
--- a/packages/web_ui/src/components/ModDetails.jsx
+++ b/packages/web_ui/src/components/ModDetails.jsx
@@ -33,7 +33,7 @@ export default function ModDetails(props) {
 		{mod.size !== undefined
 			&& <Descriptions.Item label="Size">{libHelpers.formatBytes(mod.size)}</Descriptions.Item>
 		}
-		{mod.hash && <Descriptions.Item label="Hash" span={2}>{mod.hash}</Descriptions.Item>}
+		{mod.sha1 && <Descriptions.Item label="SHA1" span={2}>{mod.sha1}</Descriptions.Item>}
 		{mod.dependencies && mod.dependencies.length
 			&& <Descriptions.Item label="Dependencies" span={2}>
 				{mod.dependencies
diff --git a/packages/web_ui/src/components/ModPackViewPage.jsx b/packages/web_ui/src/components/ModPackViewPage.jsx
index 1d01ca5e..17042616 100644
--- a/packages/web_ui/src/components/ModPackViewPage.jsx
+++ b/packages/web_ui/src/components/ModPackViewPage.jsx
@@ -95,7 +95,7 @@ function SearchModsTable(props) {
 						props.onChange({
 							type: "mods.set",
 							name: mod.name,
-							value: { name: mod.name, version: mod.version, hash: mod.hash },
+							value: { name: mod.name, version: mod.version, sha1: mod.sha1 },
 						});
 					}}
 				>{props.modPack.mods.has(mod.name) ? "change" : "add"}</Typography.Link>
@@ -107,7 +107,7 @@ function SearchModsTable(props) {
 						props.onChange({
 							type: "mods.delete",
 							name: mod.name,
-							value: { name: mod.name, version: mod.version, hash: mod.hash },
+							value: { name: mod.name, version: mod.version, sha1: mod.sha1 },
 						});
 					}}
 				>remove</Typography.Link>
diff --git a/test/integration/clusterio.js b/test/integration/clusterio.js
index 8c88c244..f1ecbb1c 100644
--- a/test/integration/clusterio.js
+++ b/test/integration/clusterio.js
@@ -917,7 +917,7 @@ describe("Integration of Clusterio", function() {
 					"dependencies:\n" +
 					"filename: empty_mod_1.0.0.zip\n" +
 					`size: ${stat.size}\n` +
-					`hash: sha1:${hash}\n`,
+					`sha1: ${hash}\n`,
 				);
 			});
 		});
diff --git a/test/lib/data/ModInfo.js b/test/lib/data/ModInfo.js
index f3de1794..9e435e81 100644
--- a/test/lib/data/ModInfo.js
+++ b/test/lib/data/ModInfo.js
@@ -34,7 +34,7 @@ describe("lib/data/ModInfo", function() {
 			check(new ModInfo({ dependencies: ["UltraMod", "SuperLib >= 1.00", "! bad-mod"] }));
 			check(new ModInfo({ filename: "MyMod_1.0.0.zip" }));
 			check(new ModInfo({ size: 1024 }));
-			check(new ModInfo({ hash: "sha5:verified-as-MyMod" }));
+			check(new ModInfo({ sha1: "verified-as-MyMod" }));
 			check(new ModInfo({ is_deleted: true }));
 
 			// All at once
@@ -50,7 +50,7 @@ describe("lib/data/ModInfo", function() {
 				dependencies: ["UltraMod", "SuperLib >= 1.00", "! bad-mod"],
 				filename: "MyMod_1.0.0.zip",
 				size: 1024,
-				hash: "sha5:verified-as-MyMod",
+				sha1: "verified-as-MyMod",
 				is_deleted: true,
 			}));
 		});
@@ -93,7 +93,7 @@ describe("lib/data/ModInfo", function() {
 					dependencies: [],
 					filename: "empty_mod_1.0.0.zip",
 					size: stat.size,
-					hash: `sha1:${hash}`,
+					sha1: hash,
 				})
 			);
 		});
diff --git a/test/lib/data/ModPack.js b/test/lib/data/ModPack.js
index 9c32a17e..9d08bdc5 100644
--- a/test/lib/data/ModPack.js
+++ b/test/lib/data/ModPack.js
@@ -27,7 +27,7 @@ describe("lib/data/ModPack", function() {
 			check(new ModPack({ factorio_version: "2.0" }));
 			check(new ModPack({ mods: [
 				{ name: "subspace_storage", version: "1.99.8" },
-				{ name: "clusterio_lib", version: "0.1.2", hash: "sha1:012345abcd" },
+				{ name: "clusterio_lib", version: "0.1.2", sha1: "012345abcd" },
 			]}));
 			check(new ModPack({ settings: {
 				"startup": {
@@ -47,7 +47,7 @@ describe("lib/data/ModPack", function() {
 				factorio_version: "2.0",
 				mods: [
 					{ name: "subspace_storage", version: "1.99.8" },
-					{ name: "clusterio_lib", version: "0.1.2", hash: "sha1:012345abcd" },
+					{ name: "clusterio_lib", version: "0.1.2", sha1: "012345abcd" },
 				],
 				settings: {
 					"startup": {