diff --git a/.github/workflows/build_additional_targets.yaml b/.github/workflows/build_additional_targets.yaml
index fbe8e9df..5c2e6c0b 100644
--- a/.github/workflows/build_additional_targets.yaml
+++ b/.github/workflows/build_additional_targets.yaml
@@ -172,7 +172,7 @@ jobs:
           gn args out/x64_webview/ --list >out/x64_webview/gn_list
           echo "::endgroup::"
 
-          ninja -C out/x64_webview system_webview_apk system_webview_shell
+          siso ninja -C out/x64_webview system_webview_apk system_webview_shell --offline
           cp ../../cromite/build/RELEASE out/x64_webview
 
       - name: Prepare Build Container for vanilla chromium
@@ -201,7 +201,7 @@ jobs:
           gn args out/chr_x64/ --list >out/chr_x64/gn_list
           echo "::endgroup::"
 
-          ninja -C out/chr_x64 chrome_public_apk
+          siso ninja -C out/chr_x64 chrome_public_apk --offline
 
           cp ../../cromite/build/RELEASE out/chr_x64
 
@@ -220,7 +220,7 @@ jobs:
           gn args out/chr_arm64/ --list >out/chr_arm64/gn_list
           echo "::endgroup::"
 
-          ninja -C out/chr_arm64 chrome_public_apk
+          siso ninja -C out/chr_arm64 chrome_public_apk --offline
 
           cp ../../cromite/build/RELEASE out/chr_arm64
 
@@ -239,6 +239,6 @@ jobs:
           gn args out/chr_arm/ --list >out/chr_arm/gn_list
           echo "::endgroup::"
 
-          ninja -C out/chr_arm chrome_public_apk
+          siso ninja -C out/chr_arm chrome_public_apk --offline
 
           cp ../../cromite/build/RELEASE out/chr_arm
diff --git a/.github/workflows/build_cromite.yaml b/.github/workflows/build_cromite.yaml
index c6afc148..4fc5adc2 100644
--- a/.github/workflows/build_cromite.yaml
+++ b/.github/workflows/build_cromite.yaml
@@ -274,8 +274,8 @@ jobs:
           gn args out/x64/ --list >out/x64/gn_list
           echo "::endgroup::"
 
-          ninja -C out/x64 chrome_public_bundle
-          ninja -C out/x64 chrome_public_apk
+          siso ninja -C out/x64 chrome_public_bundle --offline
+          siso ninja -C out/x64 chrome_public_apk --offline
 
           cp ../../cromite/build/RELEASE out/x64
 
@@ -303,7 +303,7 @@ jobs:
           gn args out/win64/ --list >out/win64/gn_list
           echo "::endgroup::"
 
-          ninja -C out/win64 chrome
+          siso ninja -C out/win64 chrome --offline
 
           cp ../../cromite/build/RELEASE out/win64
 
@@ -331,8 +331,8 @@ jobs:
           gn args out/arm64/ --list >out/arm64/gn_list
           echo "::endgroup::"
 
-          ninja -C out/arm64 chrome_public_bundle
-          ninja -C out/arm64 chrome_public_apk
+          siso ninja -C out/arm64 chrome_public_bundle --offline
+          siso ninja -C out/arm64 chrome_public_apk --offline
 
           cp ../../cromite/build/RELEASE out/arm64
 
@@ -352,7 +352,7 @@ jobs:
           cd $WORKSPACE/chromium/src
 
           echo "::group::-------- generating breakpad symbols"
-          ninja -C out/arm64 minidump_stackwalk dump_syms
+          siso ninja -C out/arm64 minidump_stackwalk dump_syms --offline
           components/crash/content/tools/generate_breakpad_symbols.py --build-dir=out/arm64 \
              --symbols-dir=out/arm64/symbols/ --binary=out/arm64/lib.unstripped/libchrome.so \
              --platform=android --clear --verbose
@@ -386,8 +386,8 @@ jobs:
           gn args out/arm/ --list >out/arm/gn_list
           echo "::endgroup::"
 
-          ninja -C out/arm chrome_public_bundle
-          ninja -C out/arm chrome_public_apk
+          siso ninja -C out/arm chrome_public_bundle --offline
+          siso ninja -C out/arm chrome_public_apk --offline
 
           cp ../../cromite/build/RELEASE out/arm
 
@@ -415,7 +415,7 @@ jobs:
           gn args out/lin64/ --list >out/lin64/gn_list
           echo "::endgroup::"
 
-          ninja -C out/lin64 chrome chrome_sandbox
+          siso ninja -C out/lin64 chrome chrome_sandbox --offline
 
           cp ../../cromite/build/RELEASE out/lin64
 
@@ -442,7 +442,7 @@ jobs:
           gn args out/arm64_webview/ --list >out/arm64_webview/gn_list
           echo "::endgroup::"
 
-          ninja -C out/arm64_webview system_webview_apk system_webview_shell
+          siso ninja -C out/arm64_webview system_webview_apk system_webview_shell --offline
           cp ../../cromite/build/RELEASE out/arm64_webview
 
       - name: Generate clangd index for Android arm64