diff --git a/lib/peopledatalabs/resources/autocomplete.rb b/lib/peopledatalabs/resources/autocomplete.rb
index 9f5c9bc..352c9a9 100644
--- a/lib/peopledatalabs/resources/autocomplete.rb
+++ b/lib/peopledatalabs/resources/autocomplete.rb
@@ -15,6 +15,7 @@ def self.retrieve(field:, text: '', size: 10, pretty: false, titlecase: false)
       headers = {
         'Accept-Encoding' => 'gzip',
         'User-Agent' => 'PDL-RUBY-SDK',
+        'SDK-Version' => Peopledatalabs::VERSION,
       }
       get(path: '/v5/autocomplete', headers: headers, params: params)
     end
diff --git a/lib/peopledatalabs/resources/bulk.rb b/lib/peopledatalabs/resources/bulk.rb
index ddc9cd8..fecaedd 100644
--- a/lib/peopledatalabs/resources/bulk.rb
+++ b/lib/peopledatalabs/resources/bulk.rb
@@ -6,6 +6,7 @@ def self.person(params:)
       headers = {
         'Accept-Encoding' => 'gzip',
         'User-Agent' => 'PDL-RUBY-SDK',
+        'SDK-Version' => Peopledatalabs::VERSION,
       }
       post(path: '/v5/person/bulk', headers: headers, body: params)
     end
@@ -14,6 +15,7 @@ def self.company(params:)
       headers = {
         'Accept-Encoding' => 'gzip',
         'User-Agent' => 'PDL-RUBY-SDK',
+        'SDK-Version' => Peopledatalabs::VERSION,
       }
       post(path: '/v5/company/enrich/bulk', headers: headers, body: params)
     end
diff --git a/lib/peopledatalabs/resources/changelog.rb b/lib/peopledatalabs/resources/changelog.rb
index 4d3382e..712537d 100644
--- a/lib/peopledatalabs/resources/changelog.rb
+++ b/lib/peopledatalabs/resources/changelog.rb
@@ -6,6 +6,7 @@ def self.person(params:)
       headers = {
         'Accept-Encoding' => 'gzip',
         'User-Agent' => 'PDL-RUBY-SDK',
+        'SDK-Version' => Peopledatalabs::VERSION,
       }
 
       stringified_params = params.transform_keys(&:to_s)
diff --git a/lib/peopledatalabs/resources/cleaner.rb b/lib/peopledatalabs/resources/cleaner.rb
index 0dcad6d..a4fb181 100644
--- a/lib/peopledatalabs/resources/cleaner.rb
+++ b/lib/peopledatalabs/resources/cleaner.rb
@@ -6,6 +6,7 @@ def self.company(kind:, value:)
       headers = {
         'Accept-Encoding' => 'gzip',
         'User-Agent' => 'PDL-RUBY-SDK',
+        'SDK-Version' => Peopledatalabs::VERSION,
       }
       get(path: '/v5/company/clean', headers: headers, params: { kind => value })
     end
@@ -14,6 +15,7 @@ def self.school(kind:, value:)
       headers = {
         'Accept-Encoding' => 'gzip',
         'User-Agent' => 'PDL-RUBY-SDK',
+        'SDK-Version' => Peopledatalabs::VERSION,
       }
       get(path: '/v5/school/clean', headers: headers, params: { kind => value })
     end
@@ -22,6 +24,7 @@ def self.location(value:)
       headers = {
         'Accept-Encoding' => 'gzip',
         'User-Agent' => 'PDL-RUBY-SDK',
+        'SDK-Version' => Peopledatalabs::VERSION,
       }
       get(path: '/v5/location/clean', headers: headers, params: { 'location' => value })
     end
diff --git a/lib/peopledatalabs/resources/enrichment.rb b/lib/peopledatalabs/resources/enrichment.rb
index 2747c6a..69366f7 100644
--- a/lib/peopledatalabs/resources/enrichment.rb
+++ b/lib/peopledatalabs/resources/enrichment.rb
@@ -6,6 +6,7 @@ def self.person(params:)
       headers = {
         'Accept-Encoding' => 'gzip',
         'User-Agent' => 'PDL-RUBY-SDK',
+        'SDK-Version' => Peopledatalabs::VERSION,
       }
       get(path: '/v5/person/enrich', headers: headers, params: params)
     end
@@ -14,6 +15,7 @@ def self.company(params:)
       headers = {
         'Accept-Encoding' => 'gzip',
         'User-Agent' => 'PDL-RUBY-SDK',
+        'SDK-Version' => Peopledatalabs::VERSION,
       }
       get(path: '/v5/company/enrich', headers: headers, params: params)
     end
@@ -30,6 +32,7 @@ def self.ip(ip:, return_ip_location: false, return_ip_metadata: false, return_pe
       headers = {
         'Accept-Encoding' => 'gzip',
         'User-Agent' => 'PDL-RUBY-SDK',
+        'SDK-Version' => Peopledatalabs::VERSION,
       }
       get(path: '/v5/ip/enrich', headers: headers, params: params)
     end
diff --git a/lib/peopledatalabs/resources/identify.rb b/lib/peopledatalabs/resources/identify.rb
index 80c6177..229c7e4 100644
--- a/lib/peopledatalabs/resources/identify.rb
+++ b/lib/peopledatalabs/resources/identify.rb
@@ -6,6 +6,7 @@ def self.person(params:)
       headers = {
         'Accept-Encoding' => 'gzip',
         'User-Agent' => 'PDL-RUBY-SDK',
+        'SDK-Version' => Peopledatalabs::VERSION,
       }
       get(path: '/v5/person/identify', headers: headers, params: params)
     end
diff --git a/lib/peopledatalabs/resources/jobtitle.rb b/lib/peopledatalabs/resources/jobtitle.rb
index bece7ab..cf9f05a 100644
--- a/lib/peopledatalabs/resources/jobtitle.rb
+++ b/lib/peopledatalabs/resources/jobtitle.rb
@@ -13,6 +13,7 @@ def self.retrieve(job_title:, pretty: false, titlecase: false)
         headers = {
           'Accept-Encoding' => 'gzip',
           'User-Agent' => 'PDL-RUBY-SDK',
+          'SDK-Version' => Peopledatalabs::VERSION,
         }
         get(path: '/v5/job_title/enrich', headers: headers, params: params)
       end
diff --git a/lib/peopledatalabs/resources/retrieve.rb b/lib/peopledatalabs/resources/retrieve.rb
index 3ec21aa..b6780ec 100644
--- a/lib/peopledatalabs/resources/retrieve.rb
+++ b/lib/peopledatalabs/resources/retrieve.rb
@@ -6,6 +6,7 @@ def self.person(person_id:, pretty: false)
       headers = {
         'Accept-Encoding' => 'gzip',
         'User-Agent' => 'PDL-RUBY-SDK',
+        'SDK-Version' => Peopledatalabs::VERSION,
       }
       get(path: "/v5/person/retrieve/#{person_id}", headers: headers, params: { 'pretty' => pretty })
     end
diff --git a/lib/peopledatalabs/resources/search.rb b/lib/peopledatalabs/resources/search.rb
index 013d741..5c82157 100644
--- a/lib/peopledatalabs/resources/search.rb
+++ b/lib/peopledatalabs/resources/search.rb
@@ -36,6 +36,7 @@ def self.search(searchType:, query:, kind:, titlecase: false, dataset: 'all', si
       headers = {
         'Accept-Encoding' => 'gzip',
         'User-Agent' => 'PDL-RUBY-SDK',
+        'SDK-Version' => Peopledatalabs::VERSION,
       }
       post(path: "/v5/#{kind}/search", headers: headers, body: body)
     end
diff --git a/lib/peopledatalabs/version.rb b/lib/peopledatalabs/version.rb
index cdc6e4b..896f44d 100644
--- a/lib/peopledatalabs/version.rb
+++ b/lib/peopledatalabs/version.rb
@@ -1,3 +1,3 @@
 module Peopledatalabs
-  VERSION = "5.2.0"
+  VERSION = "5.2.1"
 end