diff --git a/picotls/openssl.nim b/picotls/openssl.nim
index 392921a..839c9c7 100644
--- a/picotls/openssl.nim
+++ b/picotls/openssl.nim
@@ -25,11 +25,16 @@ type
 
 proc ptls_openssl_random_bytes*(buf: pointer, len: csize_t) {.importc, header: "picotls/openssl.h", cdecl.}
 
-proc ptls_openssl_init_verifiy_certificate*(self: ptr ptls_openssl_verify_certificate_t,
-                                            store: PX509_STORE): cint {.importc, header: "picotls/openssl.h", cdecl.}
+proc ptls_openssl_init_verify_certificate*(self: ptr ptls_openssl_verify_certificate_t,
+                                           store: PX509_STORE): cint
+                                          {.importc, header: "picotls/openssl.h", cdecl.}
+
+proc ptls_openssl_dispose_verify_certificate*(self: ptr ptls_openssl_verify_certificate_t)
+                                             {.importc, header: "picotls/openssl.h", cdecl.}
 
 proc ptls_openssl_init_sign_certificate*(self: ptr ptls_openssl_sign_certificate_t,
-                                         key: EVP_PKEY): cint {.importc, header: "picotls/openssl.h", cdecl.}
+                                         key: EVP_PKEY): cint
+                                        {.importc, header: "picotls/openssl.h", cdecl.}
 
 var ptls_openssl_cipher_suites* {.importc, header: "picotls/openssl.h".}: ptr ptr ptls_cipher_suite_t