diff --git a/.github/workflows/cmake-test-release-linux.yml b/.github/workflows/cmake-test-release-linux.yml
index 7f528850..634d0d5e 100644
--- a/.github/workflows/cmake-test-release-linux.yml
+++ b/.github/workflows/cmake-test-release-linux.yml
@@ -83,12 +83,12 @@ jobs:
     - name: Download 3rd party source - GC
       continue-on-error: true
       shell: sh
-      run: curl --insecure -L https://www.hboehm.info/gc/gc_source/gc-${{ env.GC_VERSION }}.tar.gz --output gc-${{ env.GC_VERSION }}.tar.gz
+      run: curl --insecure -L https://github.com/bdwgc/bdwgc/releases/download/v${{ env.GC_VERSION }}/gc-${{ env.GC_VERSION }}.tar.gz --output gc-${{ env.GC_VERSION }}.tar.gz
 
     - name: Download 3rd party source - GC:Atomic_ops
       continue-on-error: true
       shell: sh
-      run: curl --insecure -L https://www.hboehm.info/gc/gc_source/libatomic_ops-${{ env.LIBATOMIC_OPS_VERSION }}.tar.gz --output libatomic_ops-${{ env.LIBATOMIC_OPS_VERSION }}.tar.gz
+      run: curl --insecure -L https://github.com/bdwgc/libatomic_ops/releases/download/v${{ env.LIBATOMIC_OPS_VERSION }}/libatomic_ops-${{ env.LIBATOMIC_OPS_VERSION }}.tar.gz --output libatomic_ops-${{ env.LIBATOMIC_OPS_VERSION }}.tar.gz
 
     - name: UnZip 3rd party source - GC
       continue-on-error: false
diff --git a/.github/workflows/cmake-test-release-win.yml b/.github/workflows/cmake-test-release-win.yml
index 7348256f..707ef0fd 100644
--- a/.github/workflows/cmake-test-release-win.yml
+++ b/.github/workflows/cmake-test-release-win.yml
@@ -77,12 +77,12 @@ jobs:
     - name: Download 3rd party source - GC
       continue-on-error: true
       shell: pwsh
-      run: Invoke-WebRequest -SkipCertificateCheck -Uri "https://www.hboehm.info/gc/gc_source/gc-${{ env.GC_VERSION }}.tar.gz" -OutFile "gc-${{ env.GC_VERSION }}.tar.gz"
+      run: Invoke-WebRequest -SkipCertificateCheck -Uri "https://github.com/bdwgc/bdwgc/releases/download/v${{ env.GC_VERSION }}/gc-${{ env.GC_VERSION }}.tar.gz" -OutFile "gc-${{ env.GC_VERSION }}.tar.gz"
 
     - name: Download 3rd party source - GC:Atomic_ops
       continue-on-error: true
       shell: pwsh
-      run: Invoke-WebRequest -SkipCertificateCheck -Uri "https://www.hboehm.info/gc/gc_source/libatomic_ops-${{ env.LIBATOMIC_OPS_VERSION }}.tar.gz" -OutFile "libatomic_ops-${{ env.LIBATOMIC_OPS_VERSION }}.tar.gz"
+      run: Invoke-WebRequest -SkipCertificateCheck -Uri "https://github.com/bdwgc/libatomic_ops/releases/download/v${{ env.LIBATOMIC_OPS_VERSION }}/libatomic_ops-${{ env.LIBATOMIC_OPS_VERSION }}.tar.gz" -OutFile "libatomic_ops-${{ env.LIBATOMIC_OPS_VERSION }}.tar.gz"
 
     - name: UnZip 3rd party source - GC
       continue-on-error: false
diff --git a/.github/workflows/create-release.yml b/.github/workflows/create-release.yml
index faf8b196..af3d9117 100644
--- a/.github/workflows/create-release.yml
+++ b/.github/workflows/create-release.yml
@@ -78,12 +78,12 @@ jobs:
       - name: Download 3rd party source - GC
         continue-on-error: true
         shell: pwsh
-        run: Invoke-WebRequest -SkipCertificateCheck -Uri "https://www.hboehm.info/gc/gc_source/gc-${{ env.GC_VERSION }}.tar.gz" -OutFile "gc-${{ env.GC_VERSION }}.tar.gz"
+        run: Invoke-WebRequest -SkipCertificateCheck -Uri "https://github.com/bdwgc/bdwgc/releases/download/v${{ env.GC_VERSION }}/gc-${{ env.GC_VERSION }}.tar.gz" -OutFile "gc-${{ env.GC_VERSION }}.tar.gz"
 
       - name: Download 3rd party source - GC:Atomic_ops
         continue-on-error: true
         shell: pwsh
-        run: Invoke-WebRequest -SkipCertificateCheck -Uri "https://www.hboehm.info/gc/gc_source/libatomic_ops-${{ env.LIBATOMIC_OPS_VERSION }}.tar.gz" -OutFile "libatomic_ops-${{ env.LIBATOMIC_OPS_VERSION }}.tar.gz"
+        run: Invoke-WebRequest -SkipCertificateCheck -Uri "https://github.com/bdwgc/libatomic_ops/releases/download/v${{ env.LIBATOMIC_OPS_VERSION }}/libatomic_ops-${{ env.LIBATOMIC_OPS_VERSION }}.tar.gz" -OutFile "libatomic_ops-${{ env.LIBATOMIC_OPS_VERSION }}.tar.gz"
 
       - name: UnZip 3rd party source - GC
         continue-on-error: false
@@ -241,12 +241,12 @@ jobs:
       - name: Download 3rd party source - GC
         continue-on-error: true
         shell: sh
-        run: curl --insecure -L https://www.hboehm.info/gc/gc_source/gc-${{ env.GC_VERSION }}.tar.gz --output gc-${{ env.GC_VERSION }}.tar.gz
+        run: curl --insecure -L https://github.com/bdwgc/bdwgc/releases/download/v${{ env.GC_VERSION }}/gc-${{ env.GC_VERSION }}.tar.gz --output gc-${{ env.GC_VERSION }}.tar.gz
 
       - name: Download 3rd party source - GC:Atomic_ops
         continue-on-error: true
         shell: sh
-        run: curl --insecure -L https://www.hboehm.info/gc/gc_source/libatomic_ops-${{ env.LIBATOMIC_OPS_VERSION }}.tar.gz --output libatomic_ops-${{ env.LIBATOMIC_OPS_VERSION }}.tar.gz
+        run: curl --insecure -L https://github.com/bdwgc/libatomic_ops/releases/download/v${{ env.LIBATOMIC_OPS_VERSION }}/libatomic_ops-${{ env.LIBATOMIC_OPS_VERSION }}.tar.gz --output libatomic_ops-${{ env.LIBATOMIC_OPS_VERSION }}.tar.gz
 
       - name: UnZip 3rd party source - GC
         continue-on-error: false
@@ -411,12 +411,12 @@ jobs:
       - name: Download 3rd party source - GC
         continue-on-error: true
         shell: sh
-        run: curl --insecure -L https://www.hboehm.info/gc/gc_source/gc-${{ env.GC_VERSION }}.tar.gz --output gc-${{ env.GC_VERSION }}.tar.gz
+        run: curl --insecure -L https://github.com/bdwgc/bdwgc/releases/download/v${{ env.GC_VERSION }}/gc-${{ env.GC_VERSION }}.tar.gz --output gc-${{ env.GC_VERSION }}.tar.gz
 
       - name: Download 3rd party source - GC:Atomic_ops
         continue-on-error: true
         shell: sh
-        run: curl --insecure -L https://www.hboehm.info/gc/gc_source/libatomic_ops-${{ env.LIBATOMIC_OPS_VERSION }}.tar.gz --output libatomic_ops-${{ env.LIBATOMIC_OPS_VERSION }}.tar.gz
+        run: curl --insecure -L https://github.com/bdwgc/libatomic_ops/releases/download/v${{ env.LIBATOMIC_OPS_VERSION }}/libatomic_ops-${{ env.LIBATOMIC_OPS_VERSION }}.tar.gz --output libatomic_ops-${{ env.LIBATOMIC_OPS_VERSION }}.tar.gz
 
       - name: UnZip 3rd party source - GC
         continue-on-error: false