diff --git a/extensions/ql-vscode/src/codeql-cli/distribution.ts b/extensions/ql-vscode/src/codeql-cli/distribution.ts
index d827997f578..3edc5f9829c 100644
--- a/extensions/ql-vscode/src/codeql-cli/distribution.ts
+++ b/extensions/ql-vscode/src/codeql-cli/distribution.ts
@@ -26,6 +26,7 @@ import {
   showAndLogWarningMessage,
 } from "../common/logging";
 import { unzipToDirectoryConcurrently } from "../common/unzip-concurrently";
+import { reportUnzipProgress } from "../common/vscode/unzip-progress";
 
 /**
  * distribution.ts
@@ -423,6 +424,12 @@ class ExtensionSpecificDistributionManager {
       await unzipToDirectoryConcurrently(
         archivePath,
         this.getDistributionStoragePath(),
+        progressCallback
+          ? reportUnzipProgress(
+              `Extracting CodeQL CLI ${release.name}…`,
+              progressCallback,
+            )
+          : undefined,
       );
     } finally {
       await remove(tmpDirectory);
diff --git a/extensions/ql-vscode/src/common/bytes.ts b/extensions/ql-vscode/src/common/bytes.ts
new file mode 100644
index 00000000000..2dec138543b
--- /dev/null
+++ b/extensions/ql-vscode/src/common/bytes.ts
@@ -0,0 +1,3 @@
+export function readableBytesMb(numBytes: number): string {
+  return `${(numBytes / (1024 * 1024)).toFixed(1)} MB`;
+}
diff --git a/extensions/ql-vscode/src/common/unzip-concurrently.ts b/extensions/ql-vscode/src/common/unzip-concurrently.ts
index be1f0322328..fececf5c700 100644
--- a/extensions/ql-vscode/src/common/unzip-concurrently.ts
+++ b/extensions/ql-vscode/src/common/unzip-concurrently.ts
@@ -1,16 +1,22 @@
 import { availableParallelism } from "os";
-import { unzipToDirectory } from "./unzip";
+import { UnzipProgressCallback, unzipToDirectory } from "./unzip";
 import PQueue from "p-queue";
 
 export async function unzipToDirectoryConcurrently(
   archivePath: string,
   destinationPath: string,
+  progress?: UnzipProgressCallback,
 ): Promise<void> {
   const queue = new PQueue({
     concurrency: availableParallelism(),
   });
 
-  return unzipToDirectory(archivePath, destinationPath, async (tasks) => {
-    await queue.addAll(tasks);
-  });
+  return unzipToDirectory(
+    archivePath,
+    destinationPath,
+    progress,
+    async (tasks) => {
+      await queue.addAll(tasks);
+    },
+  );
 }
diff --git a/extensions/ql-vscode/src/common/unzip.ts b/extensions/ql-vscode/src/common/unzip.ts
index 1012472f592..1eec4ff8930 100644
--- a/extensions/ql-vscode/src/common/unzip.ts
+++ b/extensions/ql-vscode/src/common/unzip.ts
@@ -1,5 +1,5 @@
 import { Entry as ZipEntry, open, Options as ZipOptions, ZipFile } from "yauzl";
-import { Readable } from "stream";
+import { Readable, Transform } from "stream";
 import { dirname, join } from "path";
 import { WriteStream } from "fs";
 import { createWriteStream, ensureDir } from "fs-extra";
@@ -25,6 +25,10 @@ export function excludeDirectories(entries: ZipEntry[]): ZipEntry[] {
   return entries.filter((entry) => !/\/$/.test(entry.fileName));
 }
 
+function calculateTotalUncompressedByteSize(entries: ZipEntry[]): number {
+  return entries.reduce((total, entry) => total + entry.uncompressedSize, 0);
+}
+
 export function readZipEntries(zipFile: ZipFile): Promise<ZipEntry[]> {
   return new Promise((resolve, reject) => {
     const files: ZipEntry[] = [];
@@ -84,6 +88,7 @@ export async function openZipBuffer(
 async function copyStream(
   readable: Readable,
   writeStream: WriteStream,
+  bytesExtractedCallback?: (bytesExtracted: number) => void,
 ): Promise<void> {
   return new Promise((resolve, reject) => {
     readable.on("error", (err) => {
@@ -93,28 +98,53 @@ async function copyStream(
       resolve();
     });
 
-    readable.pipe(writeStream);
+    readable
+      .pipe(
+        new Transform({
+          transform(chunk, _encoding, callback) {
+            bytesExtractedCallback?.(chunk.length);
+            this.push(chunk);
+            callback();
+          },
+        }),
+      )
+      .pipe(writeStream);
   });
 }
 
+type UnzipProgress = {
+  filesExtracted: number;
+  totalFiles: number;
+
+  bytesExtracted: number;
+  totalBytes: number;
+};
+
+export type UnzipProgressCallback = (progress: UnzipProgress) => void;
+
 /**
  * Unzips a single file from a zip archive.
  *
  * @param zipFile
  * @param entry
  * @param rootDestinationPath
+ * @param bytesExtractedCallback Called when bytes are extracted.
+ * @return The number of bytes extracted.
  */
 async function unzipFile(
   zipFile: ZipFile,
   entry: ZipEntry,
   rootDestinationPath: string,
-): Promise<void> {
+  bytesExtractedCallback?: (bytesExtracted: number) => void,
+): Promise<number> {
   const path = join(rootDestinationPath, entry.fileName);
 
   if (/\/$/.test(entry.fileName)) {
     // Directory file names end with '/'
 
     await ensureDir(path);
+
+    return 0;
   } else {
     // Ensure the directory exists
     await ensureDir(dirname(path));
@@ -131,7 +161,9 @@ async function unzipFile(
       mode,
     });
 
-    await copyStream(readable, writeStream);
+    await copyStream(readable, writeStream, bytesExtractedCallback);
+
+    return entry.uncompressedSize;
   }
 }
 
@@ -143,10 +175,12 @@ async function unzipFile(
  * @param archivePath
  * @param destinationPath
  * @param taskRunner A function that runs the tasks (either sequentially or concurrently).
+ * @param progress
  */
 export async function unzipToDirectory(
   archivePath: string,
   destinationPath: string,
+  progress: UnzipProgressCallback | undefined,
   taskRunner: (tasks: Array<() => Promise<void>>) => Promise<void>,
 ): Promise<void> {
   const zipFile = await openZip(archivePath, {
@@ -158,8 +192,43 @@ export async function unzipToDirectory(
   try {
     const entries = await readZipEntries(zipFile);
 
+    let filesExtracted = 0;
+    const totalFiles = entries.length;
+    let bytesExtracted = 0;
+    const totalBytes = calculateTotalUncompressedByteSize(entries);
+
+    const reportProgress = () => {
+      progress?.({
+        filesExtracted,
+        totalFiles,
+        bytesExtracted,
+        totalBytes,
+      });
+    };
+
+    reportProgress();
+
     await taskRunner(
-      entries.map((entry) => () => unzipFile(zipFile, entry, destinationPath)),
+      entries.map((entry) => async () => {
+        let entryBytesExtracted = 0;
+
+        const totalEntryBytesExtracted = await unzipFile(
+          zipFile,
+          entry,
+          destinationPath,
+          (thisBytesExtracted) => {
+            entryBytesExtracted += thisBytesExtracted;
+            bytesExtracted += thisBytesExtracted;
+            reportProgress();
+          },
+        );
+
+        // Should be 0, but just in case.
+        bytesExtracted += -entryBytesExtracted + totalEntryBytesExtracted;
+
+        filesExtracted++;
+        reportProgress();
+      }),
     );
   } finally {
     zipFile.close();
@@ -173,14 +242,21 @@ export async function unzipToDirectory(
  *
  * @param archivePath
  * @param destinationPath
+ * @param progress
  */
 export async function unzipToDirectorySequentially(
   archivePath: string,
   destinationPath: string,
+  progress?: UnzipProgressCallback,
 ): Promise<void> {
-  return unzipToDirectory(archivePath, destinationPath, async (tasks) => {
-    for (const task of tasks) {
-      await task();
-    }
-  });
+  return unzipToDirectory(
+    archivePath,
+    destinationPath,
+    progress,
+    async (tasks) => {
+      for (const task of tasks) {
+        await task();
+      }
+    },
+  );
 }
diff --git a/extensions/ql-vscode/src/common/vscode/progress.ts b/extensions/ql-vscode/src/common/vscode/progress.ts
index 47c12265833..34843d6d23d 100644
--- a/extensions/ql-vscode/src/common/vscode/progress.ts
+++ b/extensions/ql-vscode/src/common/vscode/progress.ts
@@ -4,6 +4,7 @@ import {
   ProgressOptions as VSCodeProgressOptions,
   window as Window,
 } from "vscode";
+import { readableBytesMb } from "../bytes";
 
 export class UserCancellationException extends Error {
   /**
@@ -125,15 +126,13 @@ export function reportStreamProgress(
 ) {
   if (progress && totalNumBytes) {
     let numBytesDownloaded = 0;
-    const bytesToDisplayMB = (numBytes: number): string =>
-      `${(numBytes / (1024 * 1024)).toFixed(1)} MB`;
     const updateProgress = () => {
       progress({
         step: numBytesDownloaded,
         maxStep: totalNumBytes,
-        message: `${messagePrefix} [${bytesToDisplayMB(
+        message: `${messagePrefix} [${readableBytesMb(
           numBytesDownloaded,
-        )} of ${bytesToDisplayMB(totalNumBytes)}]`,
+        )} of ${readableBytesMb(totalNumBytes)}]`,
       });
     };
 
diff --git a/extensions/ql-vscode/src/common/vscode/unzip-progress.ts b/extensions/ql-vscode/src/common/vscode/unzip-progress.ts
new file mode 100644
index 00000000000..2a6c8107ee7
--- /dev/null
+++ b/extensions/ql-vscode/src/common/vscode/unzip-progress.ts
@@ -0,0 +1,18 @@
+import { readableBytesMb } from "../bytes";
+import { UnzipProgressCallback } from "../unzip";
+import { ProgressCallback } from "./progress";
+
+export function reportUnzipProgress(
+  messagePrefix: string,
+  progress: ProgressCallback,
+): UnzipProgressCallback {
+  return ({ bytesExtracted, totalBytes }) => {
+    progress({
+      step: bytesExtracted,
+      maxStep: totalBytes,
+      message: `${messagePrefix} [${readableBytesMb(
+        bytesExtracted,
+      )} of ${readableBytesMb(totalBytes)}]`,
+    });
+  };
+}
diff --git a/extensions/ql-vscode/test/unit-tests/common/unzip.test.ts b/extensions/ql-vscode/test/unit-tests/common/unzip.test.ts
index 1e593f5796c..707e56dd9de 100644
--- a/extensions/ql-vscode/test/unit-tests/common/unzip.test.ts
+++ b/extensions/ql-vscode/test/unit-tests/common/unzip.test.ts
@@ -164,6 +164,75 @@ describe.each([
     expect(await pathExists(join(tmpDir.path, "empty-directory"))).toBe(true);
     expect(await readdir(join(tmpDir.path, "empty-directory"))).toEqual([]);
   });
+
+  describe("with reported progress", () => {
+    const progressCallback = jest.fn();
+
+    beforeEach(async () => {
+      progressCallback.mockReset();
+
+      await unzipToDirectory(zipPath, tmpDir.path, progressCallback);
+    });
+
+    it("has at least as many progress callbacks as files", () => {
+      expect(progressCallback.mock.calls.length).toBeGreaterThanOrEqual(11);
+    });
+
+    it("has an incrementing files extracted value", () => {
+      let previousValue = 0;
+      for (const call of progressCallback.mock.calls.values()) {
+        const [{ filesExtracted }] = call;
+        expect(filesExtracted).toBeGreaterThanOrEqual(previousValue);
+        previousValue = filesExtracted;
+      }
+    });
+
+    it("has an incrementing bytes extracted value", () => {
+      let previousValue = 0;
+      for (const call of progressCallback.mock.calls.values()) {
+        const [{ bytesExtracted }] = call;
+        expect(bytesExtracted).toBeGreaterThanOrEqual(previousValue);
+        previousValue = bytesExtracted;
+      }
+    });
+
+    it("always increments either bytes or files extracted", () => {
+      let previousBytesExtracted = 0;
+      let previousFilesExtracted = 0;
+
+      for (const [index, call] of progressCallback.mock.calls.entries()) {
+        if (index === 0) {
+          // The first call is always 0, 0
+          continue;
+        }
+
+        const [{ bytesExtracted, filesExtracted }] = call;
+        expect(bytesExtracted + filesExtracted).toBeGreaterThan(
+          previousBytesExtracted + previousFilesExtracted,
+        );
+        previousBytesExtracted = bytesExtracted;
+        previousFilesExtracted = filesExtracted;
+      }
+    });
+
+    it("has a first call with the correct values", () => {
+      expect(progressCallback).toHaveBeenNthCalledWith(1, {
+        bytesExtracted: 0,
+        totalBytes: 87,
+        filesExtracted: 0,
+        totalFiles: 11,
+      });
+    });
+
+    it("has a last call with the correct values", () => {
+      expect(progressCallback).toHaveBeenLastCalledWith({
+        bytesExtracted: 87,
+        totalBytes: 87,
+        filesExtracted: 11,
+        totalFiles: 11,
+      });
+    });
+  });
 });
 
 async function expectFile(
diff --git a/extensions/ql-vscode/test/vscode-tests/ensureCli.ts b/extensions/ql-vscode/test/vscode-tests/ensureCli.ts
index e234e190d92..15e88c284ce 100644
--- a/extensions/ql-vscode/test/vscode-tests/ensureCli.ts
+++ b/extensions/ql-vscode/test/vscode-tests/ensureCli.ts
@@ -36,6 +36,7 @@ import supportedCliVersions from "../../supported_cli_versions.json";
 
 const _1MB = 1024 * 1024;
 const _10MB = _1MB * 10;
+const _100MB = _10MB * 10;
 
 // CLI version to test. Use the latest supported version by default.
 // And be sure to update the env if it is not otherwise set.
@@ -88,36 +89,7 @@ export async function ensureCli(useCli: boolean) {
         `CLI version ${CLI_VERSION} zip file not found. Downloading from '${url}' into '${downloadedFilePath}'.`,
       );
 
-      const assetStream = await fetch(url);
-      const contentLength = Number(
-        assetStream.headers.get("content-length") || 0,
-      );
-      console.log("Total content size", Math.round(contentLength / _1MB), "MB");
-      const archiveFile = createWriteStream(downloadedFilePath);
-      const body = assetStream.body;
-      await new Promise<void>((resolve, reject) => {
-        let numBytesDownloaded = 0;
-        let lastMessage = 0;
-        body.on("data", (data) => {
-          numBytesDownloaded += data.length;
-          if (numBytesDownloaded - lastMessage > _10MB) {
-            console.log(
-              "Downloaded",
-              Math.round(numBytesDownloaded / _1MB),
-              "MB",
-            );
-            lastMessage = numBytesDownloaded;
-          }
-          archiveFile.write(data);
-        });
-        body.on("finish", () => {
-          archiveFile.end(() => {
-            console.log("Finished download into", downloadedFilePath);
-            resolve();
-          });
-        });
-        body.on("error", reject);
-      });
+      await downloadWithProgress(url, downloadedFilePath);
     } else {
       console.log(
         `CLI version ${CLI_VERSION} zip file found at '${downloadedFilePath}'.`,
@@ -126,7 +98,7 @@ export async function ensureCli(useCli: boolean) {
 
     console.log(`Unzipping into '${unzipDir}'`);
     mkdirpSync(unzipDir);
-    await unzipToDirectorySequentially(downloadedFilePath, unzipDir);
+    await unzipWithProgress(downloadedFilePath, unzipDir);
     console.log("Done.");
   } catch (e) {
     console.error("Failed to download CLI.");
@@ -135,6 +107,59 @@ export async function ensureCli(useCli: boolean) {
   }
 }
 
+async function downloadWithProgress(url: string, filePath: string) {
+  const assetStream = await fetch(url);
+  const contentLength = Number(assetStream.headers.get("content-length") || 0);
+  console.log("Total content size", Math.round(contentLength / _1MB), "MB");
+  const archiveFile = createWriteStream(filePath);
+  const body = assetStream.body;
+  await new Promise<void>((resolve, reject) => {
+    let numBytesDownloaded = 0;
+    let lastMessage = 0;
+    body.on("data", (data) => {
+      numBytesDownloaded += data.length;
+      if (numBytesDownloaded - lastMessage > _10MB) {
+        console.log("Downloaded", Math.round(numBytesDownloaded / _1MB), "MB");
+        lastMessage = numBytesDownloaded;
+      }
+      archiveFile.write(data);
+    });
+    body.on("finish", () => {
+      archiveFile.end(() => {
+        console.log("Finished download into", filePath);
+        resolve();
+      });
+    });
+    body.on("error", reject);
+  });
+}
+
+async function unzipWithProgress(
+  filePath: string,
+  unzipDir: string,
+): Promise<void> {
+  let lastMessage = 0;
+
+  await unzipToDirectorySequentially(
+    filePath,
+    unzipDir,
+    ({ bytesExtracted, totalBytes }) => {
+      if (bytesExtracted - lastMessage > _100MB) {
+        console.log(
+          "Extracted",
+          Math.round(bytesExtracted / _1MB),
+          "MB /",
+          Math.round(totalBytes / _1MB),
+          "MB",
+        );
+        lastMessage = bytesExtracted;
+      }
+    },
+  );
+
+  console.log("Finished unzipping into", unzipDir);
+}
+
 /**
  * Url to download from
  */