diff --git a/CMakeLists.txt b/CMakeLists.txt
index cedc41eae07..0f253a6ec4c 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -18,11 +18,11 @@ set(CMAKE_CXX_STANDARD_REQUIRED ON)
 
 if(CMAKE_CXX_COMPILER_ID MATCHES "GNU")
     # GCC-specific fixes
-    add_compile_options(-Wno-unknown-pragmas -Wno-subobject-linkage)
+    add_compile_options(-Wno-unknown-pragmas -Wno-subobject-linkage -Wno-error=deprecated-declarations)
     # -Wno-subobject-linkage can be removed when we upgrade GCC version to at least 13.3
 elseif(CMAKE_CXX_COMPILER_ID MATCHES "Clang")
     # Clang-specific fixes
-    add_compile_options(-Wno-unknown-warning-option) # Ignore unknown warning options
+    add_compile_options(-Wno-unknown-warning-option -Wno-error=deprecated-declarations) # Ignore unknown warning options
 elseif(MSVC)
     # MSVC-specific fixes
     add_compile_options(/wd4068) # Ignore unknown pragmas
@@ -85,7 +85,7 @@ endif()
 ###
 
 include(deps/Boost)
-find_package(OpenSSL 1.1.1 REQUIRED)
+find_package(OpenSSL 3.6.0 REQUIRED)
 set_target_properties(OpenSSL::SSL PROPERTIES
   INTERFACE_COMPILE_DEFINITIONS OPENSSL_NO_SSL2
 )
diff --git a/conan.lock b/conan.lock
index 28bf67b1be8..44d61faad33 100644
--- a/conan.lock
+++ b/conan.lock
@@ -6,10 +6,10 @@
         "sqlite3/3.49.1#8631739a4c9b93bd3d6b753bac548a63%1756234266.869",
         "soci/4.0.3#a9f8d773cd33e356b5879a4b0564f287%1756234262.318",
         "snappy/1.1.10#968fef506ff261592ec30c574d4a7809%1756234314.246",
-        "rocksdb/10.5.1#4a197eca381a3e5ae8adf8cffa5aacd0%1759820024.194",
+        "rocksdb/10.5.1#4a197eca381a3e5ae8adf8cffa5aacd0%1762797952.535",
         "re2/20230301#dfd6e2bf050eb90ddd8729cfb4c844a4%1756234257.976",
         "protobuf/3.21.12#d927114e28de9f4691a6bbcdd9a529d1%1756234251.614",
-        "openssl/3.5.4#a1d5835cc6ed5c5b8f3cd5b9b5d24205%1760106486.594",
+        "openssl/3.6.0#89e8af1d4a21afcac0557079d23d8890%1760031152.895",
         "nudb/2.0.9#c62cfd501e57055a7e0d8ee3d5e5427d%1756234237.107",
         "lz4/1.10.0#59fc63cac7f10fbe8e05c7e62c2f3504%1756234228.999",
         "libiconv/1.17#1e65319e945f2d31941a9d28cc13c058%1756223727.64",
@@ -17,7 +17,7 @@
         "libarchive/3.8.1#5cf685686322e906cb42706ab7e099a8%1756234256.696",
         "jemalloc/5.3.0#e951da9cf599e956cebc117880d2d9f8%1729241615.244",
         "grpc/1.50.1#02291451d1e17200293a409410d1c4e1%1756234248.958",
-        "doctest/2.4.12#eb9fb352fb2fdfc8abb17ec270945165%1749889324.069",
+        "doctest/2.4.12#eb9fb352fb2fdfc8abb17ec270945165%1762797941.757",
         "date/3.0.4#f74bbba5a08fa388256688743136cb6f%1756234217.493",
         "c-ares/1.34.5#b78b91e7cfb1f11ce777a285bbf169c6%1756234217.915",
         "bzip2/1.0.8#00b4a4658791c1f06914e087f0e792f5%1756234261.716",
@@ -53,6 +53,9 @@
         ],
         "lz4/[>=1.9.4 <2]": [
             "lz4/1.10.0#59fc63cac7f10fbe8e05c7e62c2f3504"
+        ],
+        "sqlite3/3.44.2": [
+            "sqlite3/3.49.1"
         ]
     },
     "config_requires": []
diff --git a/conanfile.py b/conanfile.py
index 41ec5d35f38..6b9b5e39f99 100644
--- a/conanfile.py
+++ b/conanfile.py
@@ -1,6 +1,7 @@
 from conan import ConanFile, __version__ as conan_version
 from conan.tools.cmake import CMake, CMakeToolchain, cmake_layout
 import re
+import subprocess
 
 class Xrpl(ConanFile):
     name = 'xrpl'
@@ -27,7 +28,7 @@ class Xrpl(ConanFile):
         'grpc/1.50.1',
         'libarchive/3.8.1',
         'nudb/2.0.9',
-        'openssl/3.5.4',
+        'openssl/3.6.0',
         'soci/4.0.3',
         'zlib/1.3.1',
     ]
diff --git a/src/tests/libxrpl/basics/openssl.cpp b/src/tests/libxrpl/basics/openssl.cpp
new file mode 100644
index 00000000000..6720bb4b408
--- /dev/null
+++ b/src/tests/libxrpl/basics/openssl.cpp
@@ -0,0 +1,62 @@
+//------------------------------------------------------------------------------
+/*
+    This file is part of rippled: https://github.com/ripple/rippled
+    Copyright (c) 2025 Ripple Labs Inc.
+
+    Permission to use, copy, modify, and/or distribute this software for any
+    purpose  with  or without fee is hereby granted, provided that the above
+    copyright notice and this permission notice appear in all copies.
+
+    THE  SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+    WITH  REGARD  TO  THIS  SOFTWARE  INCLUDING  ALL  IMPLIED  WARRANTIES  OF
+    MERCHANTABILITY  AND  FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+    ANY  SPECIAL ,  DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+    WHATSOEVER  RESULTING  FROM  LOSS  OF USE, DATA OR PROFITS, WHETHER IN AN
+    ACTION  OF  CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+    OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+*/
+//==============================================================================
+
+#include <xrpl/basics/Slice.h>
+#include <xrpl/protocol/digest.h>
+
+#include <doctest/doctest.h>
+
+#include <cmath>
+#include <cstdint>
+#include <iostream>
+#include <random>
+#include <vector>
+
+using namespace ripple;
+
+static std::vector<char> const data = []() {
+    std::vector<char> strV(pow(10, 5));
+    std::random_device rd;
+    std::mt19937 gen(rd());
+    std::uniform_int_distribution<int> dis(32, 127);
+    for (size_t index = 0; index < strV.size(); ++index)
+    {
+        strV[index] = static_cast<char>(dis(gen));
+    }
+    return strV;
+}();
+
+TEST_SUITE_BEGIN("OpenSSL");
+
+TEST_CASE("SingleHashFullSlice")
+{
+    Slice const s{data.data(), data.size()};
+    auto hash = sha512Half(s);
+}
+
+TEST_CASE("MultihashAllSlices")
+{
+    for (std::size_t i = 0; i < data.size(); ++i)
+    {
+        Slice s(&data[i], data.size() - i);
+        auto hash = sha512Half(s);
+    }
+}
+
+TEST_SUITE_END();