diff --git a/.ci/ci-generate-srcinfo.py b/.ci/ci-generate-srcinfo.py
index d4d94088bd..b2a9b07ac0 100644
--- a/.ci/ci-generate-srcinfo.py
+++ b/.ci/ci-generate-srcinfo.py
@@ -29,6 +29,7 @@ import hashlib
 import time
 import shlex
 import subprocess
+import gzip
 from concurrent.futures import ThreadPoolExecutor
 from functools import partial
 
@@ -198,7 +199,7 @@ def main(argv: List[str]) -> Optional[Union[int, str]]:
     parser.add_argument('mode', choices=['msys', 'mingw'], help="The type of the repo")
     parser.add_argument("msys2_root", help="The path to MSYS2")
     parser.add_argument("repo_path", help="The path to GIT repo")
-    parser.add_argument("json_cache", help="The path to the json file used to fetch/store the results")
+    parser.add_argument("json_cache", help="The path to the json.gz file used to fetch/store the results")
     parser.add_argument("--time-limit", action="store",
         type=int, dest="time_limit", default=0,
         help='time after which it will stop and save, 0 means no limit')
@@ -210,7 +211,7 @@ def main(argv: List[str]) -> Optional[Union[int, str]]:
     cache: Cache = {}
     try:
         with open(srcinfo_path, "rb") as h:
-            cache = json.loads(h.read())
+            cache = json.loads(gzip.decompress(h.read()))
     except FileNotFoundError:
         pass
 
@@ -226,7 +227,7 @@ def main(argv: List[str]) -> Optional[Union[int, str]]:
 
     srcinfos_dict = OrderedDict(sorted(srcinfos))
     with open(srcinfo_path, "wb") as h:
-        h.write(json.dumps(srcinfos_dict, indent=2).encode("utf-8"))
+        h.write(gzip.compress(json.dumps(srcinfos_dict, indent=2).encode("utf-8")))
 
     return None
 
diff --git a/.github/workflows/generate-srcinfo.yml b/.github/workflows/generate-srcinfo.yml
index c11c549355..4e1e032f90 100644
--- a/.github/workflows/generate-srcinfo.yml
+++ b/.github/workflows/generate-srcinfo.yml
@@ -27,24 +27,24 @@ jobs:
           msystem: MSYS
           update: true
 
-      - name: Download srcinfo.json and set up the environment
+      - name: Download srcinfo.json.gz and set up the environment
         shell: msys2 {0}
         run: |
           # XXX: linting PKGBUILDs takes a loooong time, this skips it
           sed -i s/^lint_pkgbuild/#lint_pkgbuild/g /usr/bin/makepkg
           # makepkg requires strip in PATH even if it wont be used
           touch /usr/bin/strip.exe
-          curl --fail -L --retry 5 -o srcinfo.json "https://github.com/$GITHUB_REPOSITORY/releases/download/srcinfo-cache/srcinfo.json"
+          curl --fail -L --retry 5 -o srcinfo.json.gz "https://github.com/$GITHUB_REPOSITORY/releases/download/srcinfo-cache/srcinfo.json.gz"
 
-      - name: Parse PKGBUILDs and update srcinfo.json
+      - name: Parse PKGBUILDs and update srcinfo.json.gz
         run: |
           $MSYS2_ROOT=(msys2 -c 'cygpath -w /')
-          python -u .ci/ci-generate-srcinfo.py --time-limit 19800 mingw "$MSYS2_ROOT" . srcinfo.json
+          python -u .ci/ci-generate-srcinfo.py --time-limit 19800 mingw "$MSYS2_ROOT" . srcinfo.json.gz
 
       - uses: actions/upload-artifact@v3
         with:
           name: result
-          path: srcinfo.json
+          path: srcinfo.json.gz
 
   upload-srcinfo:
     needs: update-srcinfo
@@ -56,9 +56,9 @@ jobs:
         with:
           name: result
 
-      - name: Upload srcinfo.json
+      - name: Upload srcinfo.json.gz
         run: |
-          gh release upload srcinfo-cache srcinfo.json --clobber --repo "$GITHUB_REPOSITORY"
+          gh release upload srcinfo-cache srcinfo.json.gz --clobber --repo "$GITHUB_REPOSITORY"
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}