diff --git a/prepare.sh b/prepare.sh
index e3afe5c..63925fb 100755
--- a/prepare.sh
+++ b/prepare.sh
@@ -40,7 +40,7 @@ fi
 
 if [ \! -e webfiles ]; then
     WEBFILES_REPO=${WEBFILES_REPO:-https://github.com/greenaddress/GreenAddressWebFiles.git}
-    WEBFILES_COMMIT=${WEBFILES_COMMIT:-jswally-v0.0.18}
+    WEBFILES_COMMIT=${WEBFILES_COMMIT:-jswally-v0.0.19}
 
     git clone ${WEBFILES_REPO} webfiles
     cd webfiles
diff --git a/windows_build.bat b/windows_build.bat
index a50a6e1..e760bd0 100644
--- a/windows_build.bat
+++ b/windows_build.bat
@@ -19,7 +19,7 @@ if "%BITCOIN_NETWORK%"=="mainnet" (
 REM Clone and checkout specific commit of webfiles
 git clone https://github.com/greenaddress/GreenAddressWebFiles.git webfiles
 cd webfiles
-git checkout jswally-v0.0.18
+git checkout jswally-v0.0.19
 
 REM Clone and checkout a specific commit of libwally
 REM FIXME: We should use the wally repo defined in webfiles