diff --git a/.gitmodules b/.gitmodules
index f6d58ec4fe43..f41bc0568c72 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -19,7 +19,7 @@
 [submodule "content-modules/semantic-conventions"]
 	path = content-modules/semantic-conventions
 	url = https://github.com/open-telemetry/semantic-conventions
-	semconv-pin = v1.25.0
+	semconv-pin = v1.26.0
 [submodule "content-modules/opamp-spec"]
 	path = content-modules/opamp-spec
 	url = https://github.com/open-telemetry/opamp-spec
diff --git a/.htmltest.yml b/.htmltest.yml
index 09c40257b946..e45612215caf 100644
--- a/.htmltest.yml
+++ b/.htmltest.yml
@@ -34,6 +34,7 @@ IgnoreURLs: # list of regexs of paths or URLs to be ignored
   - ^https://www.chathamhouse.org
   - ^https://www.zocdoc.com
   - ^https://x.com
+  - ^https://platform.openai.com
   # OTel Google calendar - curl returns 200, but the link checker gets a 401:
   - ^https://calendar.google.com/calendar/embed\?src=google.com_b79e3e90j7bbsa2n2p5an5lf60%40group.calendar.google.com
   # YouTube playlists sometimes give a 404, although they give a 200 when accessed via browser:
diff --git a/content-modules/semantic-conventions b/content-modules/semantic-conventions
index f1be1511d917..9adff435c76e 160000
--- a/content-modules/semantic-conventions
+++ b/content-modules/semantic-conventions
@@ -1 +1 @@
-Subproject commit f1be1511d91743a457974ed9a21b9193b2fe0e51
+Subproject commit 9adff435c76ea3b8cba89babefc832d3dd3c1ab9
diff --git a/content/en/blog/2022/debug-otel-with-otel/index.md b/content/en/blog/2022/debug-otel-with-otel/index.md
index 98391bc609f2..2dcf2168d574 100644
--- a/content/en/blog/2022/debug-otel-with-otel/index.md
+++ b/content/en/blog/2022/debug-otel-with-otel/index.md
@@ -253,8 +253,7 @@ COPY opentelemetry_module.conf /etc/nginx/conf.d
 [put nginx between two services]:
   /blog/2022/instrument-nginx/#put-nginx-between-two-services
 [localhost:16686]: http://localhost:16686/
-[http request & response headers]:
-  /docs/specs/semconv/http/http-spans/#common-attributes
+[http request & response headers]: /docs/specs/semconv/http/http-spans/
 [rfc7230]: https://httpwg.org/specs/rfc7230.html#field.order
 [added some checks to the module for nginx]:
   https://github.com/open-telemetry/opentelemetry-cpp-contrib/pull/204
diff --git a/content/en/docs/languages/java/automatic/configuration.md b/content/en/docs/languages/java/automatic/configuration.md
index 4badcceeb420..008f81200ba4 100644
--- a/content/en/docs/languages/java/automatic/configuration.md
+++ b/content/en/docs/languages/java/automatic/configuration.md
@@ -196,8 +196,8 @@ following property to disable it:
 
 You can configure the agent to capture predefined HTTP headers as span
 attributes, according to the
-[semantic convention](/docs/specs/semconv/http/http-spans/#common-attributes).
-Use the following properties to define which HTTP headers you want to capture:
+[semantic convention](/docs/specs/semconv/http/http-spans/). Use the following
+properties to define which HTTP headers you want to capture:
 
 {{% config_option name="otel.instrumentation.http.client.capture-request-headers" %}}
 A comma-separated list of HTTP header names. HTTP client instrumentations will
diff --git a/scripts/content-modules/adjust-pages.pl b/scripts/content-modules/adjust-pages.pl
index 195655180354..b0f9dd7bc94d 100755
--- a/scripts/content-modules/adjust-pages.pl
+++ b/scripts/content-modules/adjust-pages.pl
@@ -20,7 +20,7 @@
 my %versions = qw(
   spec: 1.33.0
   otlp: 1.3.1
-  semconv: 1.25.0
+  semconv: 1.26.0
 );
 my $otelSpecVers = $versions{'spec:'};
 my $otlpSpecVers = $versions{'otlp:'};
@@ -102,6 +102,9 @@ ()
     s|(\]\(process.md)#process(\))|$1$2|g;
   }
 
+  # TODO: drop after fix of https://github.com/open-telemetry/semantic-conventions/pull/1065
+  s|opentelemetry-specification/tree/v1\.33\.0/specification/metrics|semantic-conventions/blob/v1\.26\.0/docs/general|g if $ARGV =~ /\/tmp\/semconv\/docs\/system\/container-metrics/;
+
   # SPECIFICATION custom processing
 
   s|\(https://github.com/open-telemetry/opentelemetry-specification\)|($specBasePath/otel/)|;
diff --git a/static/refcache.json b/static/refcache.json
index 2f6fb9783497..b3c3e4ccb0d6 100644
--- a/static/refcache.json
+++ b/static/refcache.json
@@ -1543,6 +1543,10 @@
     "StatusCode": 200,
     "LastSeen": "2024-01-30T16:14:47.417732-05:00"
   },
+  "https://docs.oracle.com/javase/8/docs/api/java/sql/Connection.html#getCatalog--": {
+    "StatusCode": 200,
+    "LastSeen": "2024-05-22T16:32:49.714908+02:00"
+  },
   "https://docs.oracle.com/javase/8/docs/api/java/util/concurrent/CompletableFuture.html": {
     "StatusCode": 200,
     "LastSeen": "2024-01-18T08:53:30.141424-05:00"
@@ -4747,6 +4751,10 @@
     "StatusCode": 206,
     "LastSeen": "2024-01-30T06:06:08.100055-05:00"
   },
+  "https://hbase.apache.org/book.html#namespace_creation": {
+    "StatusCode": 206,
+    "LastSeen": "2024-05-22T16:32:51.099512+02:00"
+  },
   "https://helm.sh": {
     "StatusCode": 206,
     "LastSeen": "2024-01-18T08:52:48.961965-05:00"
@@ -5171,6 +5179,10 @@
     "StatusCode": 200,
     "LastSeen": "2024-04-04T20:00:36.37594-04:00"
   },
+  "https://learn.microsoft.com/azure/service-bus-messaging/service-bus-messages-payloads#message-routing-and-correlation": {
+    "StatusCode": 200,
+    "LastSeen": "2024-05-22T16:32:55.573409+02:00"
+  },
   "https://learn.microsoft.com/azure/service-bus-messaging/service-bus-messaging-overview": {
     "StatusCode": 200,
     "LastSeen": "2024-04-04T20:00:36.708409-04:00"
@@ -5179,6 +5191,10 @@
     "StatusCode": 200,
     "LastSeen": "2024-01-30T16:14:24.003181-05:00"
   },
+  "https://learn.microsoft.com/dotnet/api/system.data.sqlclient.sqlconnection.database": {
+    "StatusCode": 200,
+    "LastSeen": "2024-05-22T16:32:51.167939+02:00"
+  },
   "https://learn.microsoft.com/dotnet/api/system.net.endpoint": {
     "StatusCode": 200,
     "LastSeen": "2024-01-30T16:14:23.701401-05:00"
@@ -5223,6 +5239,10 @@
     "StatusCode": 200,
     "LastSeen": "2024-01-30T16:14:24.361664-05:00"
   },
+  "https://learn.microsoft.com/sql/connect/jdbc/building-the-connection-url#named-and-multiple-sql-server-instances": {
+    "StatusCode": 200,
+    "LastSeen": "2024-05-22T16:32:51.974599+02:00"
+  },
   "https://learn.microsoft.com/windows/win32/api/ws2tcpip/nf-ws2tcpip-getaddrinfo": {
     "StatusCode": 200,
     "LastSeen": "2024-04-04T20:00:38.324091-04:00"
@@ -5275,6 +5295,10 @@
     "StatusCode": 206,
     "LastSeen": "2024-01-18T20:05:30.465821-05:00"
   },
+  "https://man7.org/linux/man-pages/man1/free.1.html": {
+    "StatusCode": 206,
+    "LastSeen": "2024-05-22T16:32:50.196928+02:00"
+  },
   "https://man7.org/linux/man-pages/man1/ps.1.html#PROCESS_STATE_CODES": {
     "StatusCode": 206,
     "LastSeen": "2024-01-18T08:53:14.645117-05:00"
@@ -8611,6 +8635,10 @@
     "StatusCode": 206,
     "LastSeen": "2024-01-30T06:05:58.268011-05:00"
   },
+  "https://www.mongodb.com/docs/manual/reference/command/": {
+    "StatusCode": 206,
+    "LastSeen": "2024-05-22T16:32:48.330708+02:00"
+  },
   "https://www.mysql.com/": {
     "StatusCode": 206,
     "LastSeen": "2024-01-30T16:07:22.780855-05:00"
@@ -9027,6 +9055,10 @@
     "StatusCode": 206,
     "LastSeen": "2024-01-30T06:05:58.327146-05:00"
   },
+  "https://www.rabbitmq.com/tutorials/tutorial-six-java#correlation-id": {
+    "StatusCode": 200,
+    "LastSeen": "2024-05-22T16:32:54.993722+02:00"
+  },
   "https://www.reactive-streams.org/reactive-streams-1.0.1-javadoc/org/reactivestreams/Publisher.html": {
     "StatusCode": 206,
     "LastSeen": "2024-01-18T19:10:25.020977-05:00"
@@ -9055,6 +9087,10 @@
     "StatusCode": 206,
     "LastSeen": "2024-01-30T06:01:07.991648-05:00"
   },
+  "https://www.rfc-editor.org/rfc/rfc3986#section-4.2": {
+    "StatusCode": 206,
+    "LastSeen": "2024-05-22T16:32:51.752771+02:00"
+  },
   "https://www.rfc-editor.org/rfc/rfc5789.html": {
     "StatusCode": 206,
     "LastSeen": "2024-01-18T08:05:44.436708-05:00"