diff --git a/.github/workflows/codeql-analysis.yml b/.github/workflows/codeql-analysis.yml
index 04d2411f2..c52f7abb4 100644
--- a/.github/workflows/codeql-analysis.yml
+++ b/.github/workflows/codeql-analysis.yml
@@ -10,6 +10,8 @@ on:
 
 jobs:
   analyze:
+    # Only run scheduled analysis on the original repository, not on forks
+    if: github.event_name != 'schedule' || github.repository == 'louislam/uptime-kuma'
     name: Analyze
     runs-on: ubuntu-latest
     timeout-minutes: 360
@@ -42,6 +44,8 @@ jobs:
         with:
           category: "/language:${{matrix.language}}"
   zizmor:
+    # Only run scheduled analysis on the original repository, not on forks
+    if: github.event_name != 'schedule' || github.repository == 'louislam/uptime-kuma'
     runs-on: ubuntu-latest
     permissions:
       security-events: write
diff --git a/.github/workflows/release-nightly.yml b/.github/workflows/release-nightly.yml
index 7aff7785d..0710da609 100644
--- a/.github/workflows/release-nightly.yml
+++ b/.github/workflows/release-nightly.yml
@@ -10,6 +10,8 @@ permissions: {}
 
 jobs:
   release-nightly:
+    # Only run on the original repository, not on forks
+    if: github.repository == 'louislam/uptime-kuma'
     runs-on: ubuntu-latest
     timeout-minutes: 120
     permissions:
diff --git a/.github/workflows/stale-bot.yml b/.github/workflows/stale-bot.yml
index 283e4f4a1..cb95bf070 100644
--- a/.github/workflows/stale-bot.yml
+++ b/.github/workflows/stale-bot.yml
@@ -8,6 +8,8 @@ permissions: {}
 
 jobs:
   stale:
+    # Only run on the original repository, not on forks
+    if: github.repository == 'louislam/uptime-kuma'
     runs-on: ubuntu-latest
     permissions:
       actions: write