diff --git a/scripts/binaries.csv b/scripts/binaries.csv
index a83f4ae090..36ae7d041e 100644
--- a/scripts/binaries.csv
+++ b/scripts/binaries.csv
@@ -1,83 +1,45 @@
-bin-linux-1.16-amd64-strip-pie-cgo,https://github.com/Zxilly/go-testdata/releases/download/latest/bin-linux-1.16-amd64-strip-pie-cgo,15,raw,bin-linux-1.16-amd64-strip-pie-cgo:bin-linux-1.16-amd64-strip-pie-cgo
-bin-linux-1.16-amd64-pie-cgo,https://github.com/Zxilly/go-testdata/releases/download/latest/bin-linux-1.16-amd64-pie-cgo,15,raw,bin-linux-1.16-amd64-pie-cgo:bin-linux-1.16-amd64-pie-cgo
-bin-linux-1.16-arm64-strip-pie-cgo,https://github.com/Zxilly/go-testdata/releases/download/latest/bin-linux-1.16-arm64-strip-pie-cgo,15,raw,bin-linux-1.16-arm64-strip-pie-cgo:bin-linux-1.16-arm64-strip-pie-cgo
-bin-linux-1.16-arm64-pie-cgo,https://github.com/Zxilly/go-testdata/releases/download/latest/bin-linux-1.16-arm64-pie-cgo,15,raw,bin-linux-1.16-arm64-pie-cgo:bin-linux-1.16-arm64-pie-cgo
-bin-linux-1.16-386-strip-pie-cgo,https://github.com/Zxilly/go-testdata/releases/download/latest/bin-linux-1.16-386-strip-pie-cgo,15,raw,bin-linux-1.16-386-strip-pie-cgo:bin-linux-1.16-386-strip-pie-cgo
-bin-linux-1.16-386-pie-cgo,https://github.com/Zxilly/go-testdata/releases/download/latest/bin-linux-1.16-386-pie-cgo,15,raw,bin-linux-1.16-386-pie-cgo:bin-linux-1.16-386-pie-cgo
-bin-linux-1.16-amd64-strip-cgo,https://github.com/Zxilly/go-testdata/releases/download/latest/bin-linux-1.16-amd64-strip-cgo,15,raw,bin-linux-1.16-amd64-strip-cgo:bin-linux-1.16-amd64-strip-cgo
-bin-linux-1.16-amd64-cgo,https://github.com/Zxilly/go-testdata/releases/download/latest/bin-linux-1.16-amd64-cgo,15,raw,bin-linux-1.16-amd64-cgo:bin-linux-1.16-amd64-cgo
-bin-linux-1.16-arm64-strip-cgo,https://github.com/Zxilly/go-testdata/releases/download/latest/bin-linux-1.16-arm64-strip-cgo,15,raw,bin-linux-1.16-arm64-strip-cgo:bin-linux-1.16-arm64-strip-cgo
-bin-linux-1.16-arm64-cgo,https://github.com/Zxilly/go-testdata/releases/download/latest/bin-linux-1.16-arm64-cgo,15,raw,bin-linux-1.16-arm64-cgo:bin-linux-1.16-arm64-cgo
-bin-linux-1.16-386-strip-cgo,https://github.com/Zxilly/go-testdata/releases/download/latest/bin-linux-1.16-386-strip-cgo,15,raw,bin-linux-1.16-386-strip-cgo:bin-linux-1.16-386-strip-cgo
-bin-linux-1.16-386-cgo,https://github.com/Zxilly/go-testdata/releases/download/latest/bin-linux-1.16-386-cgo,15,raw,bin-linux-1.16-386-cgo:bin-linux-1.16-386-cgo
-bin-linux-1.16-amd64-strip,https://github.com/Zxilly/go-testdata/releases/download/latest/bin-linux-1.16-amd64-strip,15,raw,bin-linux-1.16-amd64-strip:bin-linux-1.16-amd64-strip
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-bin-linux-1.16-arm64-strip,https://github.com/Zxilly/go-testdata/releases/download/latest/bin-linux-1.16-arm64-strip,15,raw,bin-linux-1.16-arm64-strip:bin-linux-1.16-arm64-strip
-bin-linux-1.16-arm64,https://github.com/Zxilly/go-testdata/releases/download/latest/bin-linux-1.16-arm64,15,raw,bin-linux-1.16-arm64:bin-linux-1.16-arm64
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-bin-windows-1.16-386-strip-pie-cgo,https://github.com/Zxilly/go-testdata/releases/download/latest/bin-windows-1.16-386-strip-pie-cgo,15,raw,bin-windows-1.16-386-strip-pie-cgo:bin-windows-1.16-386-strip-pie-cgo
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-bin-windows-1.16-amd64-strip-cgo,https://github.com/Zxilly/go-testdata/releases/download/latest/bin-windows-1.16-amd64-strip-cgo,15,raw,bin-windows-1.16-amd64-strip-cgo:bin-windows-1.16-amd64-strip-cgo
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-bin-linux-1.19-amd64,https://github.com/Zxilly/go-testdata/releases/download/latest/bin-linux-1.19-amd64,15,raw,bin-linux-1.19-amd64:bin-linux-1.19-amd64
-bin-linux-1.19-arm64-strip,https://github.com/Zxilly/go-testdata/releases/download/latest/bin-linux-1.19-arm64-strip,15,raw,bin-linux-1.19-arm64-strip:bin-linux-1.19-arm64-strip
-bin-linux-1.19-arm64,https://github.com/Zxilly/go-testdata/releases/download/latest/bin-linux-1.19-arm64,15,raw,bin-linux-1.19-arm64:bin-linux-1.19-arm64
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-bin-linux-1.19-386,https://github.com/Zxilly/go-testdata/releases/download/latest/bin-linux-1.19-386,15,raw,bin-linux-1.19-386:bin-linux-1.19-386
-bin-windows-1.19-amd64-strip-pie-cgo,https://github.com/Zxilly/go-testdata/releases/download/latest/bin-windows-1.19-amd64-strip-pie-cgo,15,raw,bin-windows-1.19-amd64-strip-pie-cgo:bin-windows-1.19-amd64-strip-pie-cgo
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-bin-windows-1.19-amd64-cgo,https://github.com/Zxilly/go-testdata/releases/download/latest/bin-windows-1.19-amd64-cgo,15,raw,bin-windows-1.19-amd64-cgo:bin-windows-1.19-amd64-cgo
-bin-windows-1.19-386-strip-cgo,https://github.com/Zxilly/go-testdata/releases/download/latest/bin-windows-1.19-386-strip-cgo,15,raw,bin-windows-1.19-386-strip-cgo:bin-windows-1.19-386-strip-cgo
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-bin-windows-1.19-amd64,https://github.com/Zxilly/go-testdata/releases/download/latest/bin-windows-1.19-amd64,15,raw,bin-windows-1.19-amd64:bin-windows-1.19-amd64
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diff --git a/scripts/tool/generate.py b/scripts/generate.py
similarity index 92%
rename from scripts/tool/generate.py
rename to scripts/generate.py
index 51bcda1dc8..c88dbe16cf 100644
--- a/scripts/tool/generate.py
+++ b/scripts/generate.py
@@ -1,10 +1,11 @@
 import csv
+from concurrent.futures import ThreadPoolExecutor
 
 import requests
 
-from .example import get_example_download_url
-from .remote import RemoteBinary, RemoteBinaryType, TestType, Target
-from .utils import get_binaries_path
+from tool.example import get_example_download_url
+from tool.remote import RemoteBinary, RemoteBinaryType, TestType, Target
+from tool.utils import get_binaries_path
 
 
 def add_exe(name: str, is_windows: bool) -> str:
@@ -128,7 +129,7 @@ def generate_vitess() -> list[RemoteBinary]:
 
 def generate_example() -> list[RemoteBinary]:
     ret = []
-    for v in ["1.16", "1.19", "1.22"]:
+    for v in ["1.21", "1.22"]:
         for o in ["linux", "windows", "darwin"]:
             for pie in ["-pie", ""]:
                 for cgo in ["-cgo", ""]:
@@ -172,12 +173,19 @@ def generate_example() -> list[RemoteBinary]:
     remotes.extend(generate_prometheus())
     remotes.extend(generate_vitess())
 
-    for r in remotes:
-        print(f"Checking {r.name}...")
-        resp = requests.get(r.url, stream=True)
+    pool = ThreadPoolExecutor(max_workers=16)
+
+    def check_remote(tr: RemoteBinary):
+        print(f"Checking {tr.name}...", flush=True)
+        resp = requests.head(tr.url)
         resp.raise_for_status()
         resp.close()
 
+    for r in remotes:
+        pool.submit(check_remote, r)
+
+    pool.shutdown(wait=True)
+
     with open(get_binaries_path(), "w", newline="") as f:
         writer = csv.writer(f)
         for remote in remotes: