diff --git a/src/generate-packages.ts b/src/generate-packages.ts
index f1c31e16..0220fb10 100644
--- a/src/generate-packages.ts
+++ b/src/generate-packages.ts
@@ -111,7 +111,7 @@ function createPackageJSON(typing: TypingsData, version: string, packages: AllPa
         },
         scripts: {},
         dependencies: getDependencies(typing.packageJsonDependencies, typing, packages),
-        peerDependencies: getPeerDependencies(typing.peerDependencies),
+        devDependencies: getDevDependencies(typing.getDevDependencies),
         typesPublisherContentHash: typing.contentHash,
         typeScriptVersion: typing.minTypeScriptVersion,
     };
@@ -121,7 +121,7 @@ function createPackageJSON(typing: TypingsData, version: string, packages: AllPa
 
 const definitelyTypedURL = "https://github.com/DefinitelyTyped/DefinitelyTyped";
 
-/** Adds inferred dependencies to `dependencies`, if they are not already specified in either `dependencies`. */
+/** Adds inferred dependencies to `dependencies`, if they are not already specified in `dependencies`. */
 function getDependencies(packageJsonDependencies: ReadonlyArray<PackageJsonDependency>, typing: TypingsData, allPackages: AllPackages): Dependencies {
     const dependencies: Dependencies = {};
     for (const { name, version } of packageJsonDependencies) {
@@ -138,7 +138,8 @@ function getDependencies(packageJsonDependencies: ReadonlyArray<PackageJsonDepen
     return sortObjectKeys(dependencies);
 }
 
-function getPeerDependencies(packageJsonDependencies: ReadonlyArray<PackageJsonDependency>): Dependencies {
+/** Just splits and sorts the dependencies, does not add the inferred types */
+function getDevDependencies(packageJsonDependencies: ReadonlyArray<PackageJsonDependency>): Dependencies {
     const dependencies: Dependencies = {};
     for (const { name, version } of packageJsonDependencies) {
         dependencies[name] = version;
@@ -194,8 +195,8 @@ function createReadme(typing: TypingsData): string {
     lines.push(` * Last updated: ${(new Date()).toUTCString()}`);
     const dependencies = Array.from(typing.dependencies).map(d => getFullNpmName(d.name));
     lines.push(` * Dependencies: ${dependencies.length ? dependencies.join(", ") : "none"}`);
-    const peerDependencies = Array.from(typing.peerDependencies).map(d => getFullNpmName(d.name));
-    lines.push(` * Peer Dependencies: ${peerDependencies.length ? peerDependencies.join(", ") : "none"}`);
+    const devDependencies = Array.from(typing.getDevDependencies.map(d => getFullNpmName(d.name)));
+    lines.push(` * Dev Dependencies: ${devDependencies.length ? devDependencies.join(", ") : "none"}`);
     lines.push(` * Global values: ${typing.globals.length ? typing.globals.join(", ") : "none"}`);
     lines.push("");
 
diff --git a/src/lib/definition-parser.ts b/src/lib/definition-parser.ts
index a5b1dc63..9b05e398 100644
--- a/src/lib/definition-parser.ts
+++ b/src/lib/definition-parser.ts
@@ -93,21 +93,22 @@ async function combineDataForAllTypesVersions(
     });
     const allTypesVersions = [dataForRoot, ...dataForOtherTypesVersions];
 
-    interface OptionalPackageJSON { readonly license?: unknown; readonly dependencies?: unknown; peerDependencies?: unknown; }
+    interface OptionalPackageJSON { readonly license?: unknown; readonly dependencies?: unknown; devDependencies?: unknown; }
 
     // tslint:disable-next-line await-promise (tslint bug)
     const packageJson = hasPackageJson ? await fs.readJson(packageJsonName) as OptionalPackageJSON : {};
     const license = getLicenseFromPackageJson(packageJson.license);
     const packageJsonDependencies = checkPackageJsonDependencies(packageJson.dependencies, packageJsonName, /* checkWhitelist */ true);
-    const packageJsonPeerDependencies = checkPackageJsonDependencies(packageJson.peerDependencies, packageJsonName, /* checkWhitelist */ false);
+    const packageJsonDevDependencies = checkPackageJsonDependencies(packageJson.devDependencies, packageJsonName, /* checkWhitelist */ false);
 
     const files = Array.from(flatMap(allTypesVersions, ({ typescriptVersion, declFiles }) =>
         declFiles.map(file =>
             typescriptVersion === undefined ? file : `ts${typescriptVersion}/${file}`)));
 
     // Get all package dependencies and remove any peer dependencies from them
-    const dependencies = getAllUniqueValues<"dependencies", PackageId>(allTypesVersions, "dependencies")
-                           .filter(dep => !packageJsonPeerDependencies.find(peerDep => peerDep.name === dep.name));
+    const allDependencies = getAllUniqueValues<"dependencies", PackageId>(allTypesVersions, "dependencies")
+    const dependencies = allDependencies.filter(dep => !packageJsonDevDependencies.find(devDep => devDep.name === dep.name));
+
     return {
         libraryName,
         typingsPackageName,
@@ -124,7 +125,7 @@ async function combineDataForAllTypesVersions(
         testDependencies: getAllUniqueValues<"testDependencies", string>(allTypesVersions, "testDependencies"),
         pathMappings: getAllUniqueValues<"pathMappings", PathMapping>(allTypesVersions, "pathMappings"),
         packageJsonDependencies,
-        packageJsonPeerDependencies,
+        packageJsonDevDependencies,
         contentHash: await hash(hasPackageJson ? [...files, packageJsonName] : files, mapDefined(allTypesVersions, a => a.tsconfigPathsForHash), fs),
         globals: getAllUniqueValues<"globals", string>(allTypesVersions, "globals"),
         declaredModules: getAllUniqueValues<"declaredModules", string>(allTypesVersions, "declaredModules"),
diff --git a/src/lib/packages.ts b/src/lib/packages.ts
index f3eeef94..c3997d7e 100644
--- a/src/lib/packages.ts
+++ b/src/lib/packages.ts
@@ -312,8 +312,8 @@ export interface TypingsDataRaw extends BaseRaw {
     // List of dependencies which indicate they should come from npm, not def typed
     readonly packageJsonDependencies: ReadonlyArray<PackageJsonDependency>;
 
-    // These should be removed from the packageJsonDependencies above 
-    readonly packageJsonPeerDependencies: ReadonlyArray<PackageJsonDependency>;
+    // These should be removed from the packageJsonDependencies above
+    readonly packageJsonDevDependencies: ReadonlyArray<PackageJsonDependency>;
 
     // A hash computed from all files from this definition
     readonly contentHash: string;
@@ -424,8 +424,8 @@ export class TypingsData extends PackageBase {
         return this.data.dependencies;
     }
 
-    get peerDependencies(): ReadonlyArray<PackageJsonDependency> {
-        return this.data.packageJsonPeerDependencies;
+    get getDevDependencies(): ReadonlyArray<PackageJsonDependency> {
+        return this.data.packageJsonDevDependencies;
     }
 
     /** Path to this package, *relative* to the DefinitelyTyped directory. */
diff --git a/src/util/test.ts b/src/util/test.ts
index e5201851..e6073a1d 100644
--- a/src/util/test.ts
+++ b/src/util/test.ts
@@ -23,7 +23,7 @@ export function createTypingsVersionRaw(
             typesVersions: [],
             license: License.MIT,
             packageJsonDependencies: [],
-            packageJsonPeerDependencies: [],
+            packageJsonDevDependencies: [],
             contentHash: "11111111111111",
             projectName: "zombo.com",
             globals: [],