diff --git a/generated/google-apis-observability_v1/CHANGELOG.md b/generated/google-apis-observability_v1/CHANGELOG.md
index 31166d42b10..2ad2291bc30 100644
--- a/generated/google-apis-observability_v1/CHANGELOG.md
+++ b/generated/google-apis-observability_v1/CHANGELOG.md
@@ -1,5 +1,10 @@
 # Release history for google-apis-observability_v1
 
+### v0.20.0 (2026-10-28)
+
+* Regenerated from discovery document revision 20261022
+* Regenerated using generator version 0.19.1
+
 ### v0.19.0 (2026-08-23)
 
 * Regenerated from discovery document revision 20260817
diff --git a/generated/google-apis-observability_v1/Gemfile.lock b/generated/google-apis-observability_v1/Gemfile.lock
index 2e2b8336417..9536c3cb2f6 100644
--- a/generated/google-apis-observability_v1/Gemfile.lock
+++ b/generated/google-apis-observability_v1/Gemfile.lock
@@ -1,7 +1,7 @@
 PATH
   remote: .
   specs:
-    google-apis-observability_v1 (0.19.0)
+    google-apis-observability_v1 (0.20.0)
       google-apis-core (>= 0.15.0, < 2.a)
 
 GEM
@@ -106,7 +106,7 @@ CHECKSUMS
   faraday-follow_redirects (0.5.0) sha256=5cde93c894b30943a5d2b93c2fe9284216a6b756f7af406a1e55f211d97d10ad
   faraday-net_http (3.4.4) sha256=0e78af151747ed1b00f33e25973b4bc220d7f16c00c39676817c8b12331eb588
   google-apis-core (1.2.1) sha256=3739030455277e3be90f2d07321ad4d0bf0d6b1ed820b2d092916d6cdef05337
-  google-apis-observability_v1 (0.19.0)
+  google-apis-observability_v1 (0.20.0)
   google-cloud-env (2.3.1) sha256=0faac01eb27be78c2591d64433663b1a114f8f7af55a4f819755426cac9178e7
   google-logging-utils (0.2.0) sha256=675462b4ea5affa825a3442694ca2d75d0069455a1d0956127207498fca3df7b
   googleauth (1.17.1) sha256=0f7e6fc70e204cee1b2d71f1e1de2d3b349d432404197fe68ebf7fa23d0821b9
diff --git a/generated/google-apis-observability_v1/lib/google/apis/observability_v1/classes.rb b/generated/google-apis-observability_v1/lib/google/apis/observability_v1/classes.rb
index ac1f7fb2f33..501fc3a654a 100644
--- a/generated/google-apis-observability_v1/lib/google/apis/observability_v1/classes.rb
+++ b/generated/google-apis-observability_v1/lib/google/apis/observability_v1/classes.rb
@@ -604,8 +604,9 @@ def update!(**args)
       class Scope
         include Google::Apis::Core::Hashable
       
-        # Required. The full resource name of the `LogScope`. For example: //logging.
-        # googleapis.com/projects/myproject/locations/global/logScopes/my-log-scope
+        # Required. The full resource name of the `logging.googleapis.com/LogScope`. For
+        # example: //logging.googleapis.com/projects/myproject/locations/global/
+        # logScopes/my-log-scope
         # Corresponds to the JSON property `logScope`
         # @return [String]
         attr_accessor :log_scope
@@ -617,8 +618,9 @@ class Scope
         # @return [String]
         attr_accessor :name
       
-        # Required. The resource name of the `TraceScope`. For example: projects/
-        # myproject/locations/global/traceScopes/my-trace-scope
+        # Required. The unqualified resource name of the `cloudtrace.googleapis.com/
+        # TraceScope`. For example: projects/myproject/locations/global/traceScopes/my-
+        # trace-scope
         # Corresponds to the JSON property `traceScope`
         # @return [String]
         attr_accessor :trace_scope
diff --git a/generated/google-apis-observability_v1/lib/google/apis/observability_v1/gem_version.rb b/generated/google-apis-observability_v1/lib/google/apis/observability_v1/gem_version.rb
index 16f1b3430d3..c76ee52c5e1 100644
--- a/generated/google-apis-observability_v1/lib/google/apis/observability_v1/gem_version.rb
+++ b/generated/google-apis-observability_v1/lib/google/apis/observability_v1/gem_version.rb
@@ -16,13 +16,13 @@ module Google
   module Apis
     module ObservabilityV1
       # Version of the google-apis-observability_v1 gem
-      GEM_VERSION = "0.19.0"
+      GEM_VERSION = "0.20.0"
 
       # Version of the code generator used to generate this client
-      GENERATOR_VERSION = "0.19.0"
+      GENERATOR_VERSION = "0.19.1"
 
       # Revision of the discovery document this client was generated from
-      REVISION = "20260817"
+      REVISION = "20261022"
     end
   end
 end