diff --git a/CMakeLists.txt b/CMakeLists.txt
index 3f639e94eb..6bd2144186 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -314,6 +314,8 @@ mark_as_advanced(CURL_DISABLE_PROGRESS_METER)
 option(CURL_DISABLE_PROXY "Disable proxy support" OFF)
 mark_as_advanced(CURL_DISABLE_PROXY)
 option(CURL_DISABLE_RTSP "Disable RTSP" OFF)
+mark_as_advanced(CURL_DISABLE_SHA512_256)
+option(CURL_DISABLE_SHA512_256 "Disable SHA-512/256 hash algorithm" OFF)
 mark_as_advanced(CURL_DISABLE_RTSP)
 option(CURL_DISABLE_SHUFFLE_DNS "Disable shuffle DNS feature" OFF)
 mark_as_advanced(CURL_DISABLE_SHUFFLE_DNS)
diff --git a/configure.ac b/configure.ac
index 4e71d5821a..6db5e6b5af 100644
--- a/configure.ac
+++ b/configure.ac
@@ -4646,6 +4646,25 @@ AS_HELP_STRING([--disable-progress-meter],[Disable progress-meter]),
     AC_MSG_RESULT(yes)
 )
 
+dnl ************************************************************
+dnl disable SHA-512/256 hash algorithm
+dnl
+AC_MSG_CHECKING([whether to support the SHA-512/256 hash algorithm])
+AC_ARG_ENABLE(sha512-256,
+AS_HELP_STRING([--enable-sha512-256],[Enable SHA-512/256 hash algorithm (default)])
+AS_HELP_STRING([--disable-sha512-256],[Disable SHA-512/256 hash algorithm]),
+[ case "$enableval" in
+  no)
+    AC_MSG_RESULT(no)
+    AC_DEFINE(CURL_DISABLE_SHA512_256, 1, [disable SHA-512/256 hash algorithm])
+    ;;
+  *)
+    AC_MSG_RESULT(yes)
+    ;;
+  esac ],
+    AC_MSG_RESULT(yes)
+)
+
 dnl ************************************************************
 dnl disable shuffle DNS support
 dnl
diff --git a/docs/CURL-DISABLE.md b/docs/CURL-DISABLE.md
index 3409bec018..6080851dd5 100644
--- a/docs/CURL-DISABLE.md
+++ b/docs/CURL-DISABLE.md
@@ -144,6 +144,10 @@ Disable support for proxies
 
 Disable the RTSP protocol.
 
+## `CURL_DISABLE_SHA512_256`
+
+Disable the SHA-512/256 hash algorithm.
+
 ## `CURL_DISABLE_SHUFFLE_DNS`
 
 Disable the shuffle DNS feature
diff --git a/lib/curl_config.h.cmake b/lib/curl_config.h.cmake
index cba9984552..0a895aaa6e 100644
--- a/lib/curl_config.h.cmake
+++ b/lib/curl_config.h.cmake
@@ -134,6 +134,9 @@
 /* disables RTSP */
 #cmakedefine CURL_DISABLE_RTSP 1
 
+/* disables SHA-512/256 hash algorithm */
+#cmakedefine CURL_DISABLE_SHA512_256 1
+
 /* disabled shuffle DNS feature */
 #cmakedefine CURL_DISABLE_SHUFFLE_DNS 1
 
diff --git a/tests/test1165.pl b/tests/test1165.pl
index d26a97f733..621a93537e 100755
--- a/tests/test1165.pl
+++ b/tests/test1165.pl
@@ -93,9 +93,7 @@ sub scan_file {
     while(<F>) {
         while(s/(CURL_DISABLE_[A-Z0-9_]+)//) {
             my ($sym)=($1);
-            if(not $sym =~ /^(CURL_DISABLE_SHA512_256)/) { # Skip this symbol, to be implemented
-                $file{$sym} = $source;
-            }
+            $file{$sym} = $source;
         }
     }
     close F;