Add missing const to jv_string_value() declaration

1 files changed, 1 insertions, 1 deletions

diff --git a/jq.pyx b/jq.pyx
index 1b2056c..c86d7c5 100644
--- a/jq.pyx
+++ b/jq.pyx
@@ -28,7 +28,7 @@ cdef extern from "jv.h":
     void jv_free(jv)
     jv jv_invalid_get_msg(jv)
     int jv_invalid_has_msg(jv)
-    char* jv_string_value(jv)
+    const char* jv_string_value(jv)
     jv jv_dump_string(jv, int flags)
     int jv_string_length_bytes(jv)
     int jv_is_integer(jv)