diff --git a/configure.sh b/configure.sh
index a988e80..e4c282f 100755
--- a/configure.sh
+++ b/configure.sh
@@ -90,7 +90,7 @@ RUNNER_USERNAME="$RUNNER_USERNAME"
 TWINE_NON_INTERACTIVE="$TWINE_NON_INTERACTIVE"
 EOF
 
-CURRENT_CONFIG_HASH=$(envsubst < "$CONFIG_HASH_FILE" | sha256sum)
+CURRENT_CONFIG_HASH=$(cat "$CONFIG_HASH_FILE" | sha256sum)
 echo "current config hash: $CURRENT_CONFIG_HASH"
 echo "last config hash: $LAST_CONFIG_HASH"