diff --git a/CHANGELOG.md b/CHANGELOG.md
index 3fc3ede0b1..0611bc191d 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -18,6 +18,8 @@ Increment the:
 * Convert Prometheus Exporter to Pull MetricReader [#1953](https://github.com/open-telemetry/opentelemetry-cpp/pull/1953)
 * Upgrade prometheus-cpp to v1.1.0 [#1954](https://github.com/open-telemetry/opentelemetry-cpp/pull/1954)
 * [CI] Enforce copyright check in CI [#1965](https://github.com/open-telemetry/opentelemetry-cpp/pull/1965)
+* [SEMANTIC CONVENTIONS] Upgrade to version 1.18.0
+  [#1974](https://github.com/open-telemetry/opentelemetry-cpp/pull/1974)
 
 ## [1.8.2] 2023-01-31
 
diff --git a/api/include/opentelemetry/trace/semantic_conventions.h b/api/include/opentelemetry/trace/semantic_conventions.h
index d2d7bf76bb..d0485704ef 100644
--- a/api/include/opentelemetry/trace/semantic_conventions.h
+++ b/api/include/opentelemetry/trace/semantic_conventions.h
@@ -21,7 +21,7 @@ namespace SemanticConventions
 /**
  * The URL of the OpenTelemetry schema for these keys and values.
  */
-static constexpr const char *kSchemaUrl = "https://opentelemetry.io/schemas/1.17.0";
+static constexpr const char *kSchemaUrl = "https://opentelemetry.io/schemas/1.18.0";
 
 /**
  * The type of the exception (its fully-qualified class name, if applicable). The dynamic type of
@@ -595,12 +595,12 @@ static constexpr const char *kHttpTarget = "http.target";
 
 /**
  * The matched route (path template in the format used by the respective server framework). See note
- below
+below
  *
  * <p>Notes:
-  <ul> <li>'http.route' MUST NOT be populated when this is not supported by the HTTP server
- framework as the route attribute should have low-cardinality and the URI path can NOT substitute
- it.</li> </ul>
+  <ul> <li>MUST NOT be populated when this is not supported by the HTTP server framework as the
+route attribute should have low-cardinality and the URI path can NOT substitute it. SHOULD include
+the <a href="#http-server-definitions">application root</a> if there is one.</li> </ul>
  */
 static constexpr const char *kHttpRoute = "http.route";
 
@@ -1079,6 +1079,8 @@ namespace DbSystemValues
 static constexpr const char *kOtherSql = "other_sql";
 /** Microsoft SQL Server. */
 static constexpr const char *kMssql = "mssql";
+/** Microsoft SQL Server Compact. */
+static constexpr const char *kMssqlcompact = "mssqlcompact";
 /** MySQL. */
 static constexpr const char *kMysql = "mysql";
 /** Oracle Database. */
@@ -1173,6 +1175,8 @@ static constexpr const char *kCockroachdb = "cockroachdb";
 static constexpr const char *kOpensearch = "opensearch";
 /** ClickHouse. */
 static constexpr const char *kClickhouse = "clickhouse";
+/** Cloud Spanner. */
+static constexpr const char *kSpanner = "spanner";
 }  // namespace DbSystemValues
 
 namespace DbCassandraConsistencyLevelValues
diff --git a/buildscripts/semantic-convention/generate.sh b/buildscripts/semantic-convention/generate.sh
index d0d0272ca8..ee9d3ae1a4 100755
--- a/buildscripts/semantic-convention/generate.sh
+++ b/buildscripts/semantic-convention/generate.sh
@@ -13,10 +13,15 @@ SCRIPT_DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
 ROOT_DIR="${SCRIPT_DIR}/../../"
 
 # freeze the spec & generator tools versions to make SemanticAttributes generation reproducible
-SEMCONV_VERSION=1.17.0
+
+# repository: https://github.com/open-telemetry/opentelemetry-specification
+SEMCONV_VERSION=1.18.0
+
+# repository: https://github.com/open-telemetry/build-tools
+GENERATOR_VERSION=0.15.1
+
 SPEC_VERSION=v$SEMCONV_VERSION
 SCHEMA_URL=https://opentelemetry.io/schemas/$SEMCONV_VERSION
-GENERATOR_VERSION=0.14.0
 
 cd ${SCRIPT_DIR}
 
@@ -30,6 +35,12 @@ git fetch origin "$SPEC_VERSION"
 git reset --hard FETCH_HEAD
 cd ${SCRIPT_DIR}
 
+# echo "Help ..."
+
+# docker run --rm otel/semconvgen:$GENERATOR_VERSION -h
+
+echo "Generating semantic conventions for traces ..."
+
 docker run --rm \
   -v ${SCRIPT_DIR}/opentelemetry-specification/semantic_conventions:/source \
   -v ${SCRIPT_DIR}/templates:/templates \
@@ -45,6 +56,8 @@ docker run --rm \
   -Dnamespace_open="namespace trace {" \
   -Dnamespace_close="}"
 
+echo "Generating semantic conventions for resources ..."
+
 docker run --rm \
   -v ${SCRIPT_DIR}/opentelemetry-specification/semantic_conventions:/source \
   -v ${SCRIPT_DIR}/templates:/templates \
diff --git a/sdk/include/opentelemetry/sdk/resource/semantic_conventions.h b/sdk/include/opentelemetry/sdk/resource/semantic_conventions.h
index e6e982e1b2..27aff268cc 100644
--- a/sdk/include/opentelemetry/sdk/resource/semantic_conventions.h
+++ b/sdk/include/opentelemetry/sdk/resource/semantic_conventions.h
@@ -23,7 +23,7 @@ namespace SemanticConventions
 /**
  * The URL of the OpenTelemetry schema for these keys and values.
  */
-static constexpr const char *kSchemaUrl = "https://opentelemetry.io/schemas/1.17.0";
+static constexpr const char *kSchemaUrl = "https://opentelemetry.io/schemas/1.18.0";
 
 /**
  * Array of brand name and version separated by a space
@@ -754,7 +754,7 @@ static constexpr const char *kGcpCloudFunctions = "gcp_cloud_functions";
 /** Google Cloud App Engine (GAE). */
 static constexpr const char *kGcpAppEngine = "gcp_app_engine";
 /** Red Hat OpenShift on Google Cloud. */
-static constexpr const char *kGoogleCloudOpenshift = "google_cloud_openshift";
+static constexpr const char *kGcpOpenshift = "gcp_openshift";
 /** Red Hat OpenShift on IBM Cloud. */
 static constexpr const char *kIbmCloudOpenshift = "ibm_cloud_openshift";
 /** Tencent Cloud Cloud Virtual Machine (CVM). */