diff --git a/conanfile.py b/conanfile.py
index 9630238ef6..92cff0edae 100644
--- a/conanfile.py
+++ b/conanfile.py
@@ -150,7 +150,7 @@ class Xrpl(ConanFile):
         # OpenTelemetry C++ SDK for distributed tracing (optional).
         # Provides OTLP/HTTP exporter, batch span processor, and trace API.
         if self.options.telemetry:
-            self.requires("opentelemetry-cpp/1.18.0")
+            self.requires("opentelemetry-cpp/1.26.0")
         self.requires("xxhash/0.8.3", transitive_headers=True)
 
     exports_sources = (
diff --git a/docs/build/telemetry.md b/docs/build/telemetry.md
index eff1a6848b..13edcb85a8 100644
--- a/docs/build/telemetry.md
+++ b/docs/build/telemetry.md
@@ -64,7 +64,7 @@ cd .build
 
 #### Install dependencies
 
-The `telemetry` option adds `opentelemetry-cpp/1.18.0` as a dependency.
+The `telemetry` option adds `opentelemetry-cpp/1.26.0` as a dependency.
 If the Conan lockfile does not yet include this package, bypass it with `--lockfile=""`.
 
 ```bash
@@ -236,7 +236,7 @@ curl -s -X POST http://127.0.0.1:5005/ \
 
 ### Conan lockfile error
 
-If you see `ERROR: Requirement 'opentelemetry-cpp/1.18.0' not in lockfile 'requires'`,
+If you see `ERROR: Requirement 'opentelemetry-cpp/1.26.0' not in lockfile 'requires'`,
 the lockfile was generated without the telemetry dependency.
 Pass `--lockfile=""` to bypass the lockfile, or regenerate it with telemetry enabled.