diff --git a/secp256k1-zkp-sys/depend/secp256k1/include/secp256k1.h b/secp256k1-zkp-sys/depend/secp256k1/include/secp256k1.h
index f4053f2..aa2d18b 100644
--- a/secp256k1-zkp-sys/depend/secp256k1/include/secp256k1.h
+++ b/secp256k1-zkp-sys/depend/secp256k1/include/secp256k1.h
@@ -257,70 +257,6 @@ SECP256K1_DEPRECATED("Use secp256k1_context_static instead");
  */
 SECP256K1_API void secp256k1_selftest(void);
 
-
-/** Create a secp256k1 context object (in dynamically allocated memory).
- *
- *  This function uses malloc to allocate memory. It is guaranteed that malloc is
- *  called at most once for every call of this function. If you need to avoid dynamic
- *  memory allocation entirely, see secp256k1_context_static and the functions in
- *  secp256k1_preallocated.h.
- *
- *  Returns: pointer to a newly created context object.
- *  In:      flags: Always set to SECP256K1_CONTEXT_NONE (see below).
- *
- *  The only valid non-deprecated flag in recent library versions is
- *  SECP256K1_CONTEXT_NONE, which will create a context sufficient for all functionality
- *  offered by the library. All other (deprecated) flags will be treated as equivalent
- *  to the SECP256K1_CONTEXT_NONE flag. Though the flags parameter primarily exists for
- *  historical reasons, future versions of the library may introduce new flags.
- *
- *  If the context is intended to be used for API functions that perform computations
- *  involving secret keys, e.g., signing and public key generation, then it is highly
- *  recommended to call secp256k1_context_randomize on the context before calling
- *  those API functions. This will provide enhanced protection against side-channel
- *  leakage, see secp256k1_context_randomize for details.
- *
- *  Do not create a new context object for each operation, as construction and
- *  randomization can take non-negligible time.
- */
-SECP256K1_API secp256k1_context *secp256k1_context_create(
-    unsigned int flags
-) SECP256K1_WARN_UNUSED_RESULT;
-
-/** Copy a secp256k1 context object (into dynamically allocated memory).
- *
- *  This function uses malloc to allocate memory. It is guaranteed that malloc is
- *  called at most once for every call of this function. If you need to avoid dynamic
- *  memory allocation entirely, see the functions in secp256k1_preallocated.h.
- *
- *  Cloning secp256k1_context_static is not possible, and should not be emulated by
- *  the caller (e.g., using memcpy). Create a new context instead.
- *
- *  Returns: pointer to a newly created context object.
- *  Args:    ctx: pointer to a context to copy (not secp256k1_context_static).
- */
-SECP256K1_API secp256k1_context *secp256k1_context_clone(
-    const secp256k1_context *ctx
-) SECP256K1_ARG_NONNULL(1) SECP256K1_WARN_UNUSED_RESULT;
-
-/** Destroy a secp256k1 context object (created in dynamically allocated memory).
- *
- *  The context pointer may not be used afterwards.
- *
- *  The context to destroy must have been created using secp256k1_context_create
- *  or secp256k1_context_clone. If the context has instead been created using
- *  secp256k1_context_preallocated_create or secp256k1_context_preallocated_clone, the
- *  behaviour is undefined. In that case, secp256k1_context_preallocated_destroy must
- *  be used instead.
- *
- *  Args:   ctx: pointer to a context to destroy, constructed using
- *               secp256k1_context_create or secp256k1_context_clone
- *               (i.e., not secp256k1_context_static).
- */
-SECP256K1_API void secp256k1_context_destroy(
-    secp256k1_context *ctx
-) SECP256K1_ARG_NONNULL(1);
-
 /** Set a callback function to be called when an illegal argument is passed to
  *  an API call. It will only trigger for violations that are mentioned
  *  explicitly in the header.
@@ -392,29 +328,6 @@ SECP256K1_API void secp256k1_context_set_error_callback(
     const void *data
 ) SECP256K1_ARG_NONNULL(1);
 
-/** Create a secp256k1 scratch space object.
- *
- *  Returns: a newly created scratch space.
- *  Args: ctx:  pointer to a context object.
- *  In:   size: amount of memory to be available as scratch space. Some extra
- *              (<100 bytes) will be allocated for extra accounting.
- */
-SECP256K1_API SECP256K1_WARN_UNUSED_RESULT secp256k1_scratch_space *secp256k1_scratch_space_create(
-    const secp256k1_context *ctx,
-    size_t size
-) SECP256K1_ARG_NONNULL(1);
-
-/** Destroy a secp256k1 scratch space.
- *
- *  The pointer may not be used afterwards.
- *  Args:       ctx: pointer to a context object.
- *          scratch: space to destroy
- */
-SECP256K1_API void secp256k1_scratch_space_destroy(
-    const secp256k1_context *ctx,
-    secp256k1_scratch_space *scratch
-) SECP256K1_ARG_NONNULL(1);
-
 /** Parse a variable-length public key into the pubkey object.
  *
  *  Returns: 1 if the public key was fully valid.