diff --git a/.changesets/remove-apikey-config-option.md b/.changesets/remove-apikey-config-option.md
new file mode 100644
index 00000000..b4017c65
--- /dev/null
+++ b/.changesets/remove-apikey-config-option.md
@@ -0,0 +1,6 @@
+---
+bump: "major"
+type: "remove"
+---
+
+Remove the `apiKey` config option. This has been renamed to `pushApiKey`.
diff --git a/src/__tests__/config.test.ts b/src/__tests__/config.test.ts
index 8966c098..4d974a29 100644
--- a/src/__tests__/config.test.ts
+++ b/src/__tests__/config.test.ts
@@ -140,22 +140,6 @@ describe("Configuration", () => {
     })
   })
 
-  describe("apiKey option", () => {
-    it("sets the pushApiKey config option with the apiKey value", () => {
-      const warnMock = jest.spyOn(console, "warn").mockImplementation(() => {})
-      const apiKey = "my key"
-      config = new Configuration({ apiKey })
-
-      expect(config.data.pushApiKey).toEqual(apiKey)
-      expect(config.data.apiKey).toBeUndefined()
-      expect(config.sources.initial.pushApiKey).toEqual(apiKey)
-      expect(config.sources.initial.apiKey).toBeUndefined()
-      expect(warnMock).toBeCalledWith(
-        "DEPRECATED: The `apiKey` config option was renamed to `pushApiKey`. Please rename the config option given to the Appsignal module."
-      )
-    })
-  })
-
   describe("logFilePath", () => {
     it("uses the default log file path", () => {
       jest.spyOn(fs, "accessSync").mockImplementation(() => {})
diff --git a/src/config.ts b/src/config.ts
index 6dbad273..fabb3154 100644
--- a/src/config.ts
+++ b/src/config.ts
@@ -19,13 +19,6 @@ export class Configuration {
   sources: Record<string, Partial<AppsignalOptions>>
 
   constructor(options: Partial<AppsignalOptions>) {
-    if (options.apiKey) {
-      console.warn(
-        "DEPRECATED: The `apiKey` config option was renamed to `pushApiKey`. Please rename the config option given to the Appsignal module."
-      )
-      options.pushApiKey = options.apiKey
-      delete options.apiKey
-    }
     this.sources = {
       default: this._defaultValues(),
       system: this._systemValues(),
diff --git a/src/config/options.ts b/src/config/options.ts
index cf0a5b48..526f067e 100644
--- a/src/config/options.ts
+++ b/src/config/options.ts
@@ -2,7 +2,6 @@ import type { DefaultInstrumentationName } from "../client"
 
 export type AppsignalOptions = {
   active: boolean
-  apiKey: string
   caFilePath: string
   disableDefaultInstrumentations: DefaultInstrumentationName[] | boolean
   dnsServers: string[]