diff --git a/README.md b/README.md
index b387b61f1..487a1bddb 100644
--- a/README.md
+++ b/README.md
@@ -1155,7 +1155,7 @@ The following sets of tools are available:
   - `owner`: Repository owner (string, required)
   - `pullNumber`: Pull request number to update (number, required)
   - `repo`: Repository name (string, required)
-  - `reviewers`: GitHub usernames to request reviews from (string[], optional)
+  - `reviewers`: GitHub usernames or ORG/team-slug team reviewers to request reviews from (string[], optional)
   - `state`: New state (string, optional)
   - `title`: New title (string, optional)
 
diff --git a/pkg/github/__toolsnaps__/request_pull_request_reviewers.snap b/pkg/github/__toolsnaps__/request_pull_request_reviewers.snap
index 67b701447..7e6d33a27 100644
--- a/pkg/github/__toolsnaps__/request_pull_request_reviewers.snap
+++ b/pkg/github/__toolsnaps__/request_pull_request_reviewers.snap
@@ -21,7 +21,7 @@
         "type": "string"
       },
       "reviewers": {
-        "description": "GitHub usernames to request reviews from",
+        "description": "GitHub usernames or ORG/team-slug team reviewers to request reviews from",
         "items": {
           "type": "string"
         },
@@ -37,4 +37,4 @@
     "type": "object"
   },
   "name": "request_pull_request_reviewers"
-}
\ No newline at end of file
+}
diff --git a/pkg/github/__toolsnaps__/update_pull_request.snap b/pkg/github/__toolsnaps__/update_pull_request.snap
index ef330188f..640df7970 100644
--- a/pkg/github/__toolsnaps__/update_pull_request.snap
+++ b/pkg/github/__toolsnaps__/update_pull_request.snap
@@ -34,7 +34,7 @@
         "type": "string"
       },
       "reviewers": {
-        "description": "GitHub usernames to request reviews from",
+        "description": "GitHub usernames or ORG/team-slug team reviewers to request reviews from",
         "items": {
           "type": "string"
         },
@@ -61,4 +61,4 @@
     "type": "object"
   },
   "name": "update_pull_request"
-}
\ No newline at end of file
+}
diff --git a/pkg/github/granular_tools_test.go b/pkg/github/granular_tools_test.go
index 59eb47822..91b6b044b 100644
--- a/pkg/github/granular_tools_test.go
+++ b/pkg/github/granular_tools_test.go
@@ -635,7 +635,10 @@ func TestGranularUpdatePullRequestState(t *testing.T) {
 
 func TestGranularRequestPullRequestReviewers(t *testing.T) {
 	client := mustNewGHClient(t, MockHTTPClientWithHandlers(map[string]http.HandlerFunc{
-		PostReposPullsRequestedReviewersByOwnerByRepoByPullNumber: mockResponse(t, http.StatusOK, &gogithub.PullRequest{Number: gogithub.Ptr(1)}),
+		PostReposPullsRequestedReviewersByOwnerByRepoByPullNumber: expectRequestBody(t, map[string]any{
+			"reviewers":      []any{"user1"},
+			"team_reviewers": []any{"team1"},
+		}).andThen(mockResponse(t, http.StatusOK, &gogithub.PullRequest{Number: gogithub.Ptr(1)})),
 	}))
 	deps := BaseDeps{Client: client}
 	serverTool := GranularRequestPullRequestReviewers(translations.NullTranslationHelper)
@@ -645,7 +648,7 @@ func TestGranularRequestPullRequestReviewers(t *testing.T) {
 		"owner":      "owner",
 		"repo":       "repo",
 		"pullNumber": float64(1),
-		"reviewers":  []string{"user1", "user2"},
+		"reviewers":  []string{"user1", "owner/team1"},
 	})
 	result, err := handler(ContextWithDeps(context.Background(), deps), &request)
 	require.NoError(t, err)
diff --git a/pkg/github/pullrequests.go b/pkg/github/pullrequests.go
index c298d875a..cbf8a2ff3 100644
--- a/pkg/github/pullrequests.go
+++ b/pkg/github/pullrequests.go
@@ -752,7 +752,7 @@ func UpdatePullRequest(t translations.TranslationHelperFunc) inventory.ServerToo
 			},
 			"reviewers": {
 				Type:        "array",
-				Description: "GitHub usernames to request reviews from",
+				Description: "GitHub usernames or ORG/team-slug team reviewers to request reviews from",
 				Items: &jsonschema.Schema{
 					Type: "string",
 				},
@@ -944,8 +944,10 @@ func UpdatePullRequest(t translations.TranslationHelperFunc) inventory.ServerToo
 					return utils.NewToolResultErrorFromErr("failed to get GitHub client", err), nil, nil
 				}
 
+				userReviewers, teamReviewers := splitPullRequestReviewers(reviewers)
 				reviewersRequest := github.ReviewersRequest{
-					Reviewers: reviewers,
+					Reviewers:     userReviewers,
+					TeamReviewers: teamReviewers,
 				}
 
 				_, resp, err := client.PullRequests.RequestReviewers(ctx, owner, repo, pullNumber, reviewersRequest)
diff --git a/pkg/github/pullrequests_granular.go b/pkg/github/pullrequests_granular.go
index 30d7f78d6..6bc2b99f3 100644
--- a/pkg/github/pullrequests_granular.go
+++ b/pkg/github/pullrequests_granular.go
@@ -297,7 +297,7 @@ func GranularRequestPullRequestReviewers(t translations.TranslationHelperFunc) i
 					"pullNumber": {Type: "number", Description: "The pull request number", Minimum: jsonschema.Ptr(1.0)},
 					"reviewers": {
 						Type:        "array",
-						Description: "GitHub usernames to request reviews from",
+						Description: "GitHub usernames or ORG/team-slug team reviewers to request reviews from",
 						Items:       &jsonschema.Schema{Type: "string"},
 					},
 				},
@@ -325,13 +325,17 @@ func GranularRequestPullRequestReviewers(t translations.TranslationHelperFunc) i
 			if len(reviewers) == 0 {
 				return utils.NewToolResultError("missing required parameter: reviewers"), nil, nil
 			}
+			userReviewers, teamReviewers := splitPullRequestReviewers(reviewers)
 
 			client, err := deps.GetClient(ctx)
 			if err != nil {
 				return utils.NewToolResultErrorFromErr("failed to get GitHub client", err), nil, nil
 			}
 
-			pr, resp, err := client.PullRequests.RequestReviewers(ctx, owner, repo, pullNumber, gogithub.ReviewersRequest{Reviewers: reviewers})
+			pr, resp, err := client.PullRequests.RequestReviewers(ctx, owner, repo, pullNumber, gogithub.ReviewersRequest{
+				Reviewers:     userReviewers,
+				TeamReviewers: teamReviewers,
+			})
 			if err != nil {
 				return ghErrors.NewGitHubAPIErrorResponse(ctx, "failed to request reviewers", resp, err), nil, nil
 			}
@@ -351,6 +355,22 @@ func GranularRequestPullRequestReviewers(t translations.TranslationHelperFunc) i
 	return st
 }
 
+func splitPullRequestReviewers(reviewers []string) ([]string, []string) {
+	userReviewers := make([]string, 0, len(reviewers))
+	teamReviewers := make([]string, 0)
+
+	for _, reviewer := range reviewers {
+		org, team, ok := strings.Cut(reviewer, "/")
+		if ok && org != "" && team != "" && !strings.Contains(team, "/") {
+			teamReviewers = append(teamReviewers, team)
+			continue
+		}
+		userReviewers = append(userReviewers, reviewer)
+	}
+
+	return userReviewers, teamReviewers
+}
+
 // GranularCreatePullRequestReview creates a tool to create a PR review.
 func GranularCreatePullRequestReview(t translations.TranslationHelperFunc) inventory.ServerTool {
 	st := NewTool(
diff --git a/pkg/github/pullrequests_test.go b/pkg/github/pullrequests_test.go
index 097651b66..0faee23e2 100644
--- a/pkg/github/pullrequests_test.go
+++ b/pkg/github/pullrequests_test.go
@@ -257,6 +257,24 @@ func Test_UpdatePullRequest(t *testing.T) {
 			expectError: false,
 			expectedPR:  mockPRWithReviewers,
 		},
+		{
+			name: "successful PR update with user and team reviewers",
+			mockedClient: MockHTTPClientWithHandlers(map[string]http.HandlerFunc{
+				PostReposPullsRequestedReviewersByOwnerByRepoByPullNumber: expectRequestBody(t, map[string]any{
+					"reviewers":      []any{"reviewer1"},
+					"team_reviewers": []any{"platform"},
+				}).andThen(mockResponse(t, http.StatusOK, mockPRWithReviewers)),
+				GetReposPullsByOwnerByRepoByPullNumber: mockResponse(t, http.StatusOK, mockPRWithReviewers),
+			}),
+			requestArgs: map[string]any{
+				"owner":      "owner",
+				"repo":       "repo",
+				"pullNumber": float64(42),
+				"reviewers":  []any{"reviewer1", "owner/platform"},
+			},
+			expectError: false,
+			expectedPR:  mockPRWithReviewers,
+		},
 		{
 			name: "successful PR update (title only)",
 			mockedClient: MockHTTPClientWithHandlers(map[string]http.HandlerFunc{