diff --git a/UNRELEASED-V4.md b/UNRELEASED-V4.md
index f02278be716..60bee608297 100644
--- a/UNRELEASED-V4.md
+++ b/UNRELEASED-V4.md
@@ -20,7 +20,8 @@ Use [the changelog guidelines](https://git.io/polaris-changelog-guidelines) to f
 
 ### Dependency upgrades
 
-- Update `react` to 16.8.6 and `enzyme` to 3.9.1 ([#1392](https://github.com/Shopify/polaris-react/pull/1392))
+- Removed `@types/prop-types` and `prop-types` ([#1505](https://github.com/Shopify/polaris-react/pull/1505))
+- Updated`react` to 16.8.6 and `enzyme` to 3.9.1 ([#1392](https://github.com/Shopify/polaris-react/pull/1392))
 
 ### Code quality
 
diff --git a/package.json b/package.json
index 20f77b51874..f934a16f9fd 100644
--- a/package.json
+++ b/package.json
@@ -182,14 +182,12 @@
     "@shopify/polaris-tokens": "^2.3.0",
     "@shopify/react-compose": "^0.1.6",
     "@shopify/react-utilities": "^2.0.3",
-    "@types/prop-types": "^15.5.5",
     "@types/react": "^16.8.15",
     "@types/react-dom": "^16.8.4",
     "@types/react-transition-group": "^2.0.7",
     "core-js": "^2.5.1",
     "hoist-non-react-statics": "^2.5.0",
     "lodash": "^4.17.4",
-    "prop-types": "^15.6.1",
     "react-transition-group": "^2.4.0",
     "tslib": "^1.9.3"
   }
diff --git a/src/components/Navigation/types.ts b/src/components/Navigation/types.ts
index 552fd477ba0..d6187b73b7a 100644
--- a/src/components/Navigation/types.ts
+++ b/src/components/Navigation/types.ts
@@ -1,4 +1,3 @@
-import * as PropTypes from 'prop-types';
 import {Props as IconProps} from '../Icon';
 
 export interface ItemType {
@@ -12,8 +11,3 @@ export interface SectionType {
   fill?: boolean;
   items?: ItemType[];
 }
-
-export const contextTypes = {
-  location: PropTypes.string,
-  onNavigationDismiss: PropTypes.func,
-};
diff --git a/src/components/ThemeProvider/index.ts b/src/components/ThemeProvider/index.ts
index b083320a5b3..c5523eec99c 100644
--- a/src/components/ThemeProvider/index.ts
+++ b/src/components/ThemeProvider/index.ts
@@ -1,12 +1,6 @@
 import ThemeProvider from './ThemeProvider';
 
-export {
-  Theme,
-  ColorsToParse,
-  ThemeVariant,
-  ThemeColors,
-  THEME_CONTEXT_TYPES,
-} from './types';
+export {Theme, ColorsToParse, ThemeVariant, ThemeColors} from './types';
 export {
   default as ThemeProviderContext,
   ThemeProviderContextType,
diff --git a/src/components/ThemeProvider/types.ts b/src/components/ThemeProvider/types.ts
index dde38de5ea1..8838f82a6c1 100644
--- a/src/components/ThemeProvider/types.ts
+++ b/src/components/ThemeProvider/types.ts
@@ -1,5 +1,3 @@
-import * as PropTypes from 'prop-types';
-
 export type ColorsToParse = ThemeColor;
 
 export type ThemeLogo = {
@@ -35,5 +33,3 @@ export interface Theme {
 }
 
 export type ThemeVariant = 'light' | 'dark';
-
-export const THEME_CONTEXT_TYPES = {polarisTheme: PropTypes.any};
diff --git a/yarn.lock b/yarn.lock
index ed10c9342e2..f9c8eb2c141 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1768,7 +1768,7 @@
   resolved "https://registry.yarnpkg.com/@types/node/-/node-8.10.17.tgz#d48cf10f0dc6dcf59f827f5a3fc7a4a6004318d3"
   integrity sha512-3N3FRd/rA1v5glXjb90YdYUa+sOB7WrkU2rAhKZnF4TKD86Cym9swtulGuH0p9nxo7fP5woRNa8b0oFTpCO1bg==
 
-"@types/prop-types@*", "@types/prop-types@^15.5.5":
+"@types/prop-types@*":
   version "15.5.5"
   resolved "https://registry.yarnpkg.com/@types/prop-types/-/prop-types-15.5.5.tgz#17038dd322c2325f5da650a94d5f9974943625e3"
   integrity sha512-mOrlCEdwX3seT3n0AXNt4KNPAZZxcsABUHwBgFXOt+nvFUXkxCAO6UBJHPrDxWEa2KDMil86355fjo8jbZ+K0Q==