diff --git a/lib/workos/user_management.rb b/lib/workos/user_management.rb
index d3ae3cd1..09ab6c63 100644
--- a/lib/workos/user_management.rb
+++ b/lib/workos/user_management.rb
@@ -206,7 +206,7 @@ def create_user(
             email_verified: email_verified,
             password_hash: password_hash,
             password_hash_type: password_hash_type,
-          },
+          }.compact,
           auth: true,
         )
 
@@ -251,7 +251,7 @@ def update_user(
             password: password,
             password_hash: password_hash,
             password_hash_type: password_hash_type,
-          },
+          }.compact,
           auth: true,
         )
 
@@ -643,7 +643,7 @@ def create_magic_auth(email:, invitation_token: nil)
             body: {
               email: email,
               invitation_token: invitation_token,
-            },
+            }.compact,
             auth: true,
           ),
         )
@@ -697,7 +697,7 @@ def enroll_auth_factor(user_id:, type:, totp_issuer: nil, totp_user: nil, totp_s
               totp_issuer: totp_issuer,
               totp_user: totp_user,
               totp_secret: totp_secret,
-            },
+            }.compact,
             auth: true,
           ),
         )
@@ -928,7 +928,7 @@ def create_organization_membership(user_id:, organization_id:, role_slug: nil)
             user_id: user_id,
             organization_id: organization_id,
             role_slug: role_slug,
-          },
+          }.compact,
           auth: true,
         )
 
@@ -1093,7 +1093,7 @@ def send_invitation(email:, organization_id: nil, expires_in_days: nil, inviter_
               expires_in_days: expires_in_days,
               inviter_user_id: inviter_user_id,
               role_slug: role_slug,
-            },
+            }.compact,
             auth: true,
           ),
         )
diff --git a/spec/lib/workos/user_management_spec.rb b/spec/lib/workos/user_management_spec.rb
index cb2324a2..8ba0f023 100644
--- a/spec/lib/workos/user_management_spec.rb
+++ b/spec/lib/workos/user_management_spec.rb
@@ -338,6 +338,26 @@
         end
       end
 
+      it 'only sends non-nil values in request body' do
+        expect(described_class).to receive(:post_request) do |options|
+          body = options[:body]
+          expect(body).to eq({ email: 'test@example.com', first_name: 'John' })
+          expect(body).not_to have_key(:last_name)
+          expect(body).not_to have_key(:email_verified)
+
+          double('request')
+        end.and_return(double('request'))
+
+        expect(described_class).to receive(:execute_request).and_return(
+          double('response', body: '{"id": "test_user", "email": "test@example.com"}'),
+        )
+
+        described_class.create_user(
+          email: 'test@example.com',
+          first_name: 'John',
+        )
+      end
+
       context 'with an invalid payload' do
         it 'returns an error' do
           VCR.use_cassette 'user_management/create_user_invalid' do
@@ -382,6 +402,30 @@
         end
       end
 
+      it 'only sends non-nil values in request body' do
+        # Mock the request to inspect what's being sent
+        expect(described_class).to receive(:put_request) do |options|
+          # Verify that the body only contains non-nil values
+          body = options[:body]
+          expect(body).to eq({ email_verified: true })
+          expect(body).not_to have_key(:first_name)
+          expect(body).not_to have_key(:last_name)
+          expect(body).not_to have_key(:email)
+
+          # Return a mock request object
+          double('request')
+        end.and_return(double('request'))
+
+        expect(described_class).to receive(:execute_request).and_return(
+          double('response', body: '{"id": "test_user", "email_verified": true}'),
+        )
+
+        described_class.update_user(
+          id: 'user_01H7TVSKS45SDHN5V9XPSM6H44',
+          email_verified: true,
+        )
+      end
+
       context 'with an invalid payload' do
         it 'returns an error' do
           VCR.use_cassette 'user_management/update_user/invalid' do
@@ -778,6 +822,28 @@
           expect(authentication_response.authentication_challenge.id).to eq('auth_challenge_01H96FETXGTW1QMBSBT2T36PW0')
         end
       end
+
+      it 'only sends non-nil values in request body' do
+        expect(described_class).to receive(:post_request) do |options|
+          body = options[:body]
+          expect(body).to eq({ type: 'totp', totp_issuer: 'Test App' })
+          expect(body).not_to have_key(:totp_user)
+          expect(body).not_to have_key(:totp_secret)
+
+          double('request')
+        end.and_return(double('request'))
+
+        expect(described_class).to receive(:execute_request).and_return(
+          double('response',
+                 body: '{"authentication_factor": {"id": "test"}, "authentication_challenge": {"id": "test"}}',),
+        )
+
+        described_class.enroll_auth_factor(
+          user_id: 'user_123',
+          type: 'totp',
+          totp_issuer: 'Test App',
+        )
+      end
     end
 
     context 'with an incorrect user id' do
@@ -1444,6 +1510,27 @@
           expect(invitation.email).to eq('test@workos.com')
         end
       end
+
+      it 'only sends non-nil values in request body' do
+        expect(described_class).to receive(:post_request) do |options|
+          body = options[:body]
+          expect(body).to eq({ email: 'test@workos.com', organization_id: 'org_123' })
+          expect(body).not_to have_key(:expires_in_days)
+          expect(body).not_to have_key(:inviter_user_id)
+          expect(body).not_to have_key(:role_slug)
+
+          double('request')
+        end.and_return(double('request'))
+
+        expect(described_class).to receive(:execute_request).and_return(
+          double('response', body: '{"id": "test_invitation"}'),
+        )
+
+        described_class.send_invitation(
+          email: 'test@workos.com',
+          organization_id: 'org_123',
+        )
+      end
     end
 
     context 'with an invalid payload' do