diff --git a/src/libsodium/crypto_stream/chacha20/ref/chacha20_ref.h b/src/libsodium/crypto_stream/chacha20/ref/chacha20_ref.h
index e42beeff..6ac48075 100644
--- a/src/libsodium/crypto_stream/chacha20/ref/chacha20_ref.h
+++ b/src/libsodium/crypto_stream/chacha20/ref/chacha20_ref.h
@@ -6,21 +6,3 @@
 
 extern struct crypto_stream_chacha20_implementation
     crypto_stream_chacha20_ref_implementation;
-
-int crypto_stream_chacha20_ref(unsigned char *c, unsigned long long clen,
-                               const unsigned char *n, const unsigned char *k);
-
-int crypto_stream_chacha20_ref_xor_ic(unsigned char *c, const unsigned char *m,
-                                      unsigned long long   mlen,
-                                      const unsigned char *n, uint64_t ic,
-                                      const unsigned char *k);
-
-int crypto_stream_chacha20_ietf_ref(unsigned char *c, unsigned long long clen,
-                                    const unsigned char *n,
-                                    const unsigned char *k);
-
-int crypto_stream_chacha20_ietf_ref_xor_ic(unsigned char *      c,
-                                           const unsigned char *m,
-                                           unsigned long long   mlen,
-                                           const unsigned char *n, uint32_t ic,
-                                           const unsigned char *k);
diff --git a/src/libsodium/crypto_stream/chacha20/vec/chacha20_vec.h b/src/libsodium/crypto_stream/chacha20/vec/chacha20_vec.h
index da8babce..1bbe37c7 100644
--- a/src/libsodium/crypto_stream/chacha20/vec/chacha20_vec.h
+++ b/src/libsodium/crypto_stream/chacha20/vec/chacha20_vec.h
@@ -6,23 +6,3 @@
 
 extern struct crypto_stream_chacha20_implementation
     crypto_stream_chacha20_vec_implementation;
-
-int
-crypto_stream_chacha20_vec(unsigned char *c, unsigned long long clen,
-                           const unsigned char *n, const unsigned char *k);
-
-int
-crypto_stream_chacha20_vec_xor_ic(unsigned char *c, const unsigned char *m,
-                                  unsigned long long mlen,
-                                  const unsigned char *n, uint64_t ic,
-                                  const unsigned char *k);
-
-int
-crypto_stream_chacha20_ietf_vec(unsigned char *c, unsigned long long clen,
-                                const unsigned char *n, const unsigned char *k);
-
-int
-crypto_stream_chacha20_ietf_vec_xor_ic(unsigned char *c, const unsigned char *m,
-                                       unsigned long long mlen,
-                                       const unsigned char *n, uint32_t ic,
-                                       const unsigned char *k);