diff --git a/generated/google-apis-fitness_v1/CHANGELOG.md b/generated/google-apis-fitness_v1/CHANGELOG.md
index 179cfc331..1fa8a46d5 100644
--- a/generated/google-apis-fitness_v1/CHANGELOG.md
+++ b/generated/google-apis-fitness_v1/CHANGELOG.md
@@ -1,5 +1,10 @@
 # Release history for google-apis-fitness_v1
 
+### v0.2.0 (2021-01-20)
+
+* Regenerated from discovery document revision 20210115
+* Regenerated using generator version 0.1.2
+
 ### v0.1.0 (2021-01-07)
 
 * Regenerated using generator version 0.1.1
diff --git a/generated/google-apis-fitness_v1/lib/google/apis/fitness_v1/gem_version.rb b/generated/google-apis-fitness_v1/lib/google/apis/fitness_v1/gem_version.rb
index 870379354..1e6631733 100644
--- a/generated/google-apis-fitness_v1/lib/google/apis/fitness_v1/gem_version.rb
+++ b/generated/google-apis-fitness_v1/lib/google/apis/fitness_v1/gem_version.rb
@@ -16,13 +16,13 @@ module Google
   module Apis
     module FitnessV1
       # Version of the google-apis-fitness_v1 gem
-      GEM_VERSION = "0.1.0"
+      GEM_VERSION = "0.2.0"
 
       # Version of the code generator used to generate this client
-      GENERATOR_VERSION = "0.1.1"
+      GENERATOR_VERSION = "0.1.2"
 
       # Revision of the discovery document this client was generated from
-      REVISION = "20201012"
+      REVISION = "20210115"
     end
   end
 end
diff --git a/generated/google-apis-fitness_v1/lib/google/apis/fitness_v1/service.rb b/generated/google-apis-fitness_v1/lib/google/apis/fitness_v1/service.rb
index 1bf74d951..acbff96ce 100644
--- a/generated/google-apis-fitness_v1/lib/google/apis/fitness_v1/service.rb
+++ b/generated/google-apis-fitness_v1/lib/google/apis/fitness_v1/service.rb
@@ -404,17 +404,15 @@ module Google
         # Adds data points to a dataset. The dataset need not be previously created. All
         # points within the given dataset will be returned with subsquent calls to
         # retrieve this dataset. Data points can belong to more than one dataset. This
-        # method does not use patch semantics.
+        # method does not use patch semantics: the data points provided are merely
+        # inserted, with no existing data replaced.
         # @param [String] user_id
         #   Patch a dataset for the person identified. Use me to indicate the
         #   authenticated user. Only me is supported at this time.
         # @param [String] data_source_id
         #   The data stream ID of the data source that created the dataset.
         # @param [String] dataset_id
-        #   Dataset identifier that is a composite of the minimum data point start time
-        #   and maximum data point end time represented as nanoseconds from the epoch. The
-        #   ID is formatted like: "startTime-endTime" where startTime and endTime are 64
-        #   bit integers.
+        #   This field is not used, and can be safely omitted.
         # @param [Google::Apis::FitnessV1::Dataset] dataset_object
         # @param [Fixnum] current_time_millis
         #   The client's current time in milliseconds since epoch. Note that the
diff --git a/generated/google-apis-fitness_v1/synth.metadata b/generated/google-apis-fitness_v1/synth.metadata
index 429012f74..157bcb068 100644
--- a/generated/google-apis-fitness_v1/synth.metadata
+++ b/generated/google-apis-fitness_v1/synth.metadata
@@ -4,7 +4,7 @@
       "git": {
         "name": ".",
         "remote": "https://github.com/googleapis/google-api-ruby-client.git",
-        "sha": "c98c719bbab68d0890524d53f8b629d7858af9c2"
+        "sha": "b62760d36d74ab189a4fa6f77d61fa2a3d989c89"
       }
     }
   ]