diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index 397ecda51c..c1bd64b1f4 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -25,6 +25,9 @@ jobs:
     env:
       RUSTFLAGS: -Ctarget-feature=+crt-static
       RUST_MIN_STACK: 16777216
+      # Below is a workaround in order to generate the right bindings for `aws-lc-sys`.
+      # See https://github.com/aws/aws-lc-rs/issues/919 for more details.
+      AWS_LC_SYS_EFFECTIVE_TARGET_aarch64_pc_windows_gnullvm: aarch64-pc-windows-gnu
     permissions:
       id-token: write
       contents: read
@@ -38,6 +41,7 @@ jobs:
           - x86_64-pc-windows-msvc
           - aarch64-pc-windows-msvc
           - x86_64-pc-windows-gnu
+          - aarch64-pc-windows-gnullvm
         include:
           - target: x86_64-pc-windows-msvc
             run_tests: YES
@@ -50,6 +54,10 @@ jobs:
             rustup_arch: aarch64
             os: windows-11-arm
             run_tests: YES
+          - target: aarch64-pc-windows-gnullvm
+            rustup_arch: aarch64
+            os: windows-11-arm
+            run_tests: YES
     steps:
       - uses: actions/checkout@v5
         # v2 defaults to a shallow checkout, but we need at least to the previous tag
@@ -197,6 +205,9 @@ jobs:
     env:
       RUSTFLAGS: -Ctarget-feature=+crt-static
       RUST_MIN_STACK: 16777216
+      # Below is a workaround in order to generate the right bindings for `aws-lc-sys`.
+      # See https://github.com/aws/aws-lc-rs/issues/919 for more details.
+      AWS_LC_SYS_EFFECTIVE_TARGET_aarch64_pc_windows_gnullvm: aarch64-pc-windows-gnu
     permissions:
       id-token: write
       contents: read
@@ -210,6 +221,7 @@ jobs:
           - x86_64-pc-windows-msvc
           - aarch64-pc-windows-msvc
           - x86_64-pc-windows-gnu
+          - aarch64-pc-windows-gnullvm
         include:
           - target: x86_64-pc-windows-msvc
             run_tests: YES
@@ -222,6 +234,10 @@ jobs:
             rustup_arch: aarch64
             os: windows-11-arm
             run_tests: YES
+          - target: aarch64-pc-windows-gnullvm
+            rustup_arch: aarch64
+            os: windows-11-arm
+            run_tests: YES
     steps:
       - uses: actions/checkout@v5
         # v2 defaults to a shallow checkout, but we need at least to the previous tag
@@ -369,6 +385,9 @@ jobs:
     env:
       RUSTFLAGS: -Ctarget-feature=+crt-static
       RUST_MIN_STACK: 16777216
+      # Below is a workaround in order to generate the right bindings for `aws-lc-sys`.
+      # See https://github.com/aws/aws-lc-rs/issues/919 for more details.
+      AWS_LC_SYS_EFFECTIVE_TARGET_aarch64_pc_windows_gnullvm: aarch64-pc-windows-gnu
     permissions:
       id-token: write
       contents: read
@@ -384,6 +403,7 @@ jobs:
           - aarch64-pc-windows-msvc
           - x86_64-pc-windows-gnu
           - i686-pc-windows-gnu # skip-pr skip-main
+          - aarch64-pc-windows-gnullvm
         include:
           - target: x86_64-pc-windows-msvc
             run_tests: YES
@@ -396,6 +416,10 @@ jobs:
             rustup_arch: aarch64
             os: windows-11-arm
             run_tests: YES
+          - target: aarch64-pc-windows-gnullvm
+            rustup_arch: aarch64
+            os: windows-11-arm
+            run_tests: YES
           - target: i686-pc-windows-gnu # skip-pr skip-main
             arch: i686 # skip-pr skip-main
             mingwdir: mingw32 # skip-pr skip-main
diff --git a/ci/actions-templates/windows-builds-template.yaml b/ci/actions-templates/windows-builds-template.yaml
index 151001ebd9..4f07135fb1 100644
--- a/ci/actions-templates/windows-builds-template.yaml
+++ b/ci/actions-templates/windows-builds-template.yaml
@@ -12,6 +12,9 @@ jobs: # skip-main skip-pr skip-stable
     env:
       RUSTFLAGS: -Ctarget-feature=+crt-static
       RUST_MIN_STACK: 16777216
+      # Below is a workaround in order to generate the right bindings for `aws-lc-sys`.
+      # See https://github.com/aws/aws-lc-rs/issues/919 for more details.
+      AWS_LC_SYS_EFFECTIVE_TARGET_aarch64_pc_windows_gnullvm: aarch64-pc-windows-gnu
     permissions:
       id-token: write
       contents: read
@@ -27,6 +30,7 @@ jobs: # skip-main skip-pr skip-stable
           - aarch64-pc-windows-msvc
           - x86_64-pc-windows-gnu
           - i686-pc-windows-gnu # skip-pr skip-main
+          - aarch64-pc-windows-gnullvm
         include:
           - target: x86_64-pc-windows-msvc
             run_tests: YES
@@ -39,6 +43,10 @@ jobs: # skip-main skip-pr skip-stable
             rustup_arch: aarch64
             os: windows-11-arm
             run_tests: YES
+          - target: aarch64-pc-windows-gnullvm
+            rustup_arch: aarch64
+            os: windows-11-arm
+            run_tests: YES
           - target: i686-pc-windows-gnu # skip-pr skip-main
             arch: i686 # skip-pr skip-main
             mingwdir: mingw32 # skip-pr skip-main
diff --git a/ci/cloudfront-invalidation.txt b/ci/cloudfront-invalidation.txt
index 557404da6c..7e5e77293c 100644
--- a/ci/cloudfront-invalidation.txt
+++ b/ci/cloudfront-invalidation.txt
@@ -5,6 +5,8 @@ rustup/dist/aarch64-apple-darwin/rustup-init
 rustup/dist/aarch64-apple-darwin/rustup-init.sha256
 rustup/dist/aarch64-linux-android/rustup-init
 rustup/dist/aarch64-linux-android/rustup-init.sha256
+rustup/dist/aarch64-pc-windows-gnullvm/rustup-init.exe
+rustup/dist/aarch64-pc-windows-gnullvm/rustup-init.exe.sha256
 rustup/dist/aarch64-pc-windows-msvc/rustup-init.exe
 rustup/dist/aarch64-pc-windows-msvc/rustup-init.exe.sha256
 rustup/dist/aarch64-unknown-linux-gnu/rustup-init
diff --git a/rustup-init.sh b/rustup-init.sh
index 6a50beacb5..e486a5497c 100755
--- a/rustup-init.sh
+++ b/rustup-init.sh
@@ -466,6 +466,10 @@ get_architecture() {
 
         aarch64 | arm64)
             _cputype=aarch64
+            # Windows aarch64 uses gnullvm instead of gnu
+            if [ "$_ostype" = "pc-windows-gnu" ]; then
+                _ostype=pc-windows-gnullvm
+            fi
             ;;
 
         x86_64 | x86-64 | x64 | amd64)