diff --git a/appveyor.yml b/appveyor.yml
index cc5b52921d..b05b27b4b3 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -58,7 +58,7 @@ install:
 
 build_script:
   - set Path=%MINGW_DIR%\bin;c:\msys64\usr\bin;%PCAP_PATH%;%Path%
-  - cargo install --force cbindgen
+  - cargo install --force --debug --version 0.14.1 cbindgen
   - set Path=C:\Users\appveyor\.cargo\bin;%Path%
   - git clone https://github.com/OISF/libhtp -b 0.5.x
   - bash autogen.sh