diff --git a/conan.lock b/conan.lock
index e032059b89..3d4c9f584e 100644
--- a/conan.lock
+++ b/conan.lock
@@ -10,7 +10,7 @@
         "rocksdb/10.5.1#4a197eca381a3e5ae8adf8cffa5aacd0%1762797952.535",
         "re2/20251105#8579cfd0bda4daf0683f9e3898f964b4%1774398111.888",
         "protobuf/6.33.5#ff253ead763bd8d9904a52979cd21e81%1782392410.233933",
-        "openssl/3.6.2#4789bbf131b77d0515d15e094c8f697f%1778071755.506",
+        "openssl/3.6.3#1163d4ddc603907084d08a6a0c6e580f%1782307150.583886",
         "nudb/2.0.9#11149c73f8f2baff9a0198fe25971fc7%1775040983.408",
         "mpt-crypto/0.4.0-rc2#a580f2f9ad0e795de696aa62d54fb9af%1782425834.488828",
         "lz4/1.10.0#982d9b673900f665a1da109e09c17cab%1782392402.164188",
diff --git a/conanfile.py b/conanfile.py
index a2997c408b..e47a20cbe9 100644
--- a/conanfile.py
+++ b/conanfile.py
@@ -33,7 +33,7 @@ class Xrpl(ConanFile):
         "grpc/1.81.1",
         "libarchive/3.8.7",
         "nudb/2.0.9",
-        "openssl/3.6.2",
+        "openssl/3.6.3",
         "soci/4.0.3",
         "zlib/1.3.2",
     ]
diff --git a/run_openssl_comparison.sh b/run_openssl_comparison.sh
index 686159db6b..9d7a74c409 100755
--- a/run_openssl_comparison.sh
+++ b/run_openssl_comparison.sh
@@ -1,13 +1,14 @@
 #!/usr/bin/env bash
-# Compare SHA-512-half performance: OpenSSL 3.5.6 vs 3.6.2.
+# Compare SHA-512-half performance across OpenSSL versions.
 # Binaries are identical builds (GCC 13.3, Release, same locked deps),
 # differing only in the statically linked OpenSSL.
 set -euo pipefail
 
 cd "$(dirname "$0")/.build"
 
-OLD=./xrpl_tests-openssl-3.5.6
-NEW=./xrpl_tests-openssl-3.6.2
+V356=./xrpl_tests-openssl-3.5.6
+V362=./xrpl_tests-openssl-3.6.2
+V363=./xrpl_tests-openssl-3.6.3
 
 # Single hash of the full 100 KB buffer. Startup-dominated (~ms), kept for
 # parity with earlier result logs; expect near-identical numbers.
@@ -15,8 +16,9 @@ FILTER=OpenSSL.SingleHashFullSlice
 hyperfine -N \
     --warmup 5 \
     --min-runs 200 \
-    --command-name "openssl-3.5.6 singlehash" "$OLD --gtest_filter=$FILTER" \
-    --command-name "openssl-3.6.2 singlehash" "$NEW --gtest_filter=$FILTER" \
+    --command-name "openssl-3.5.6 singlehash" "$V356 --gtest_filter=$FILTER" \
+    --command-name "openssl-3.6.2 singlehash" "$V362 --gtest_filter=$FILTER" \
+    --command-name "openssl-3.6.3 singlehash" "$V363 --gtest_filter=$FILTER" \
     --export-markdown openssl_comparison_singlehash.md \
     --export-json openssl_comparison_singlehash.json
 
@@ -25,8 +27,9 @@ FILTER=OpenSSL.MultihashAllSlices
 hyperfine \
     --warmup 5 \
     --min-runs 20 \
-    --command-name "openssl-3.5.6 multihash" "$OLD --gtest_filter=$FILTER" \
-    --command-name "openssl-3.6.2 multihash" "$NEW --gtest_filter=$FILTER" \
+    --command-name "openssl-3.5.6 multihash" "$V356 --gtest_filter=$FILTER" \
+    --command-name "openssl-3.6.2 multihash" "$V362 --gtest_filter=$FILTER" \
+    --command-name "openssl-3.6.3 multihash" "$V363 --gtest_filter=$FILTER" \
     --export-markdown openssl_comparison.md \
     --export-json openssl_comparison.json
 
diff --git a/src/tests/libxrpl/basics/openssl_test_results_3.5.6_3.6.2_3.6.3 b/src/tests/libxrpl/basics/openssl_test_results_3.5.6_3.6.2_3.6.3
new file mode 100644
index 0000000000..fd1d741cae
--- /dev/null
+++ b/src/tests/libxrpl/basics/openssl_test_results_3.5.6_3.6.2_3.6.3
@@ -0,0 +1,35 @@
+-------------------------------------------------------------------------------------------------
+OpenSSL 3.5.6 vs 3.6.2 vs 3.6.3 comparison
+Date: 2026-07-08
+Branch: vlntb/pratik-openssl-performance-test (commit 2133ba64bf)
+Machine: valentin-Thelio-Major (Ubuntu 24.04, 48 cores)
+
+All three binaries are identical Release builds (GCC 13.3, C++23, same
+conan.lock apart from the openssl entry), differing only in the statically
+linked OpenSSL version (verified via the embedded version banner:
+grep -aom1 'OpenSSL 3\.' <binary>). 3.5.6/3.6.2 recipes from conancenter,
+3.6.3 from the xrplf remote.
+
+Benchmark script: run_openssl_comparison.sh (hyperfine 1.18.0)
+
+SingleHashFullSlice (hyperfine -N --warmup 5 --min-runs 200)
+Note: startup-dominated (~ms); one 100 KB hash takes microseconds.
+
+| Command                    | Mean [ms] | Min [ms] | Max [ms] | Relative    |
+|:---------------------------|----------:|---------:|---------:|------------:|
+| openssl-3.5.6 singlehash   | 4.6 ± 0.5 |      3.9 |      8.2 | 1.03 ± 0.15 |
+| openssl-3.6.2 singlehash   | 4.6 ± 0.4 |      3.9 |      6.5 | 1.01 ± 0.14 |
+| openssl-3.6.3 singlehash   | 4.5 ± 0.4 |      3.9 |      6.2 | 1.00        |
+
+MultihashAllSlices (hyperfine --warmup 5 --min-runs 20; 100k sha512Half calls per run)
+
+| Command                    | Mean [s]      | Min [s] | Max [s] | Relative    |
+|:---------------------------|--------------:|--------:|--------:|------------:|
+| openssl-3.5.6 multihash    | 4.083 ± 0.015 |   4.060 |   4.117 | 1.00 ± 0.01 |
+| openssl-3.6.2 multihash    | 4.074 ± 0.017 |   4.049 |   4.116 | 1.00        |
+| openssl-3.6.3 multihash    | 4.081 ± 0.028 |   4.047 |   4.125 | 1.00 ± 0.01 |
+
+Conclusion: all three versions are statistically indistinguishable on both
+benchmarks. The ~42% SHA-512 regression observed with the 3.6.0 alpha (see
+openssl_test_results_1) remains fixed in 3.6.3. No performance objection to
+upgrading to either 3.6.2 or 3.6.3.