diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 9133639..51c182f 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -12,6 +12,21 @@ jobs:
         # python-version: [3.9, 3.10.0-alpha.6, pypy3]
         python-version: ['3.9', '3.10', '3.11', '3.12', '3.13', '3.14']
         nss-source: ['latest-esr', 'latest', 'NSS_3_117_RTM', 'NSS_3_112_2_RTM', 'system']
+        exclude:
+          - os: macos
+            nss-source: NSS_3_117_RTM
+          - os: macos
+            nss-source: NSS_3_112_2_RTM
+          - os: macos
+            nss-source: latest
+          - os: macos
+            nss-source: latest-esr
+          - os: windows
+            nss-source: NSS_3_117_RTM
+          - os: windows
+            nss-source: NSS_3_112_2_RTM
+          - os: windows
+            nss-source: system
     env:
       # Needed to force UTF-8 and have consistent behavior in Windows
       PYTHONUTF8: 1