diff --git a/appveyor.yml b/appveyor.yml
index e76dfae..ddc65b2 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -7,16 +7,21 @@ environment:
     matrix:
         - TARGET: i686-pc-windows-gnu
           CHANNEL: stable
+          MSYS2_BITS: 32
         - TARGET: i686-pc-windows-gnu
           CHANNEL: beta
+          MSYS2_BITS: 32
         - TARGET: i686-pc-windows-gnu
           CHANNEL: nightly
+          MSYS2_BITS: 32
         - TARGET: i686-pc-windows-gnu
           CHANNEL: nightly
           FEATURES: "--features generic-simd"
+          MSYS2_BITS: 32
         - TARGET: i686-pc-windows-gnu
           CHANNEL: nightly
           FEATURES: "--features generic-simd,runtime-dispatch-simd"
+          MSYS2_BITS: 32
         - TARGET: i686-pc-windows-msvc
           CHANNEL: stable
         - TARGET: i686-pc-windows-msvc
@@ -31,16 +36,21 @@ environment:
           FEATURES: "--features generic-simd,runtime-dispatch-simd"
         - TARGET: x86_64-pc-windows-gnu
           CHANNEL: stable
+          MSYS2_BITS: 64
         - TARGET: x86_64-pc-windows-gnu
           CHANNEL: beta
+          MSYS2_BITS: 64
         - TARGET: x86_64-pc-windows-gnu
           CHANNEL: nightly
+          MSYS2_BITS: 64
         - TARGET: x86_64-pc-windows-gnu
           CHANNEL: nightly
           FEATURES: "--features generic-simd"
+          MSYS2_BITS: 64
         - TARGET: x86_64-pc-windows-gnu
           CHANNEL: nightly
           FEATURES: "--features generic-simd,runtime-dispatch-simd"
+          MSYS2_BITS: 64
         - TARGET: x86_64-pc-windows-msvc
           CHANNEL: stable
         - TARGET: x86_64-pc-windows-msvc
@@ -69,6 +79,7 @@ cache:
     - C:\Users\appveyor\.cargo\registry
 
 test_script:
+    - echo PATH=%PATH%
     - echo RUSTFLAGS=%RUSTFLAGS%
     - echo FEATURES=%FEATURES%
     - cargo test --target %TARGET% %FEATURES%