diff --git a/.github/workflows/github-travis.yml b/.github/workflows/github-travis.yml
index fc4c51016e..d50b6ee3fd 100644
--- a/.github/workflows/github-travis.yml
+++ b/.github/workflows/github-travis.yml
@@ -120,9 +120,12 @@ jobs:
       matrix:
         toSignedZipName: [Gama1.7-macosx.cocoa.x86_64, Gama1.7-macosx.cocoa.x86_64_withJDK, Gama1.7-macosx.cocoa.aarch64, Gama1.7-macosx.cocoa.aarch64_withJDK]
     steps:
+      - name: Delay x86_64 jobs
+        if: contains(matrix.toSignedZipName, 'x86_64')
+        run: sleep 60
       - name: Delay JDK jobs
         if: contains(matrix.toSignedZipName, 'withJDK')
-        run: sleep 450
+        run: sleep 100
 
       - name: Prepare vm
         run: |
@@ -157,6 +160,7 @@ jobs:
           # Variables
           MACOS_DEV_ID: ${{ secrets.MACOS_DEV_ID }}
           MACOS_KEYCHAIN_PWD: ${{ secrets.MACOS_KEYCHAIN_PWD }}
+          isWithJDK: contains(matrix.toSignedZipName, 'withJDK')
         run: |
           # Unlock
           security unlock-keychain -p "$MACOS_KEYCHAIN_PWD" build.keychain
diff --git a/travis/mac-sign.sh b/travis/mac-sign.sh
index 675a6edbf9..4106c9ae67 100644
--- a/travis/mac-sign.sh
+++ b/travis/mac-sign.sh
@@ -10,7 +10,12 @@ function signInJar(){
 
     sed -i -e '/META-INF/d' filelist.txt
 
-    tail -r filelist.txt > reverse-filelist.txt
+    # Reverse list to prevent concurrency signature submition per architecture
+    if [[ $isWithJDK ]]; then
+        tail -r filelist.txt > reverse-filelist.txt
+        rm filelist.txt
+        mv reverse-filelist.txt filelist.txt
+    fi
 
     while read f
     do
@@ -27,11 +32,17 @@ function signInJar(){
         fi
 
         jar uf "$1" "$f"
-    done < reverse-filelist.txt
+    done < filelist.txt
 }
 
 find ./ -name "*jar" > jarlist.txt
-tail -r jarlist.txt > reverse-jarlist.txt
+
+# Reverse list to prevent concurrency signature submition per architecture
+if [[ $isWithJDK ]]; then
+    tail -r filelist.txt > reverse-filelist.txt
+    rm filelist.txt
+    mv reverse-filelist.txt filelist.txt
+fi
 
 # Sign .jar files
 while read j
@@ -41,7 +52,7 @@ do
     find . -not -wholename "*Gama.app*" -delete
 
     echo "xxx"
-done < reverse-jarlist.txt
+done < jarlist.txt
 
 # Sign single lib files
 find ./ \( -name "*dylib" -o -name "*.so" -o -name "*.jnilib" \) -exec codesign --timestamp --force -s "$MACOS_DEV_ID" -v {} \;
\ No newline at end of file