diff --git a/internal/sync/jira.go b/internal/sync/jira.go
index 5f63243..7d09d2d 100644
--- a/internal/sync/jira.go
+++ b/internal/sync/jira.go
@@ -2,9 +2,9 @@ package sync
 
 import (
 	"context"
+	"encoding/json"
 	"fmt"
 	"net/http"
-	"net/url"
 	"strings"
 	"time"
 )
@@ -47,23 +47,41 @@ type jiraIssue struct {
 	} `json:"fields"`
 }
 
+// search runs a JQL query via POST /rest/api/3/search/jql — the replacement
+// for the removed GET /rest/api/3/search endpoint (Atlassian CHANGE-2046).
+// It uses cursor pagination (nextPageToken/isLast); the legacy startAt/total
+// fields no longer exist.
 func (j *jiraConnector) search(ctx context.Context, jql, fields string) ([]jiraIssue, error) {
+	fieldList := strings.Split(fields, ",")
+	u := j.baseURL + "/rest/api/3/search/jql"
 	var all []jiraIssue
-	for startAt := 0; ; {
-		var page struct {
-			Issues []jiraIssue `json:"issues"`
-			Total  int         `json:"total"`
+	nextPageToken := ""
+	for {
+		reqBody := map[string]any{
+			"jql":        jql,
+			"fields":     fieldList,
+			"maxResults": 100,
 		}
-		u := fmt.Sprintf("%s/rest/api/3/search?jql=%s&fields=%s&maxResults=100&startAt=%d",
-			j.baseURL, url.QueryEscape(jql), url.QueryEscape(fields), startAt)
-		if err := getJSON(ctx, j.Authorize, u, &page); err != nil {
+		if nextPageToken != "" {
+			reqBody["nextPageToken"] = nextPageToken
+		}
+		body, err := json.Marshal(reqBody)
+		if err != nil {
+			return nil, fmt.Errorf("jira search: encode request: %w", err)
+		}
+		var page struct {
+			Issues        []jiraIssue `json:"issues"`
+			NextPageToken string      `json:"nextPageToken"`
+			IsLast        bool        `json:"isLast"`
+		}
+		if err := doJSON(ctx, j.Authorize, http.MethodPost, u, body, &page); err != nil {
 			return nil, fmt.Errorf("jira search: %w", err)
 		}
 		all = append(all, page.Issues...)
-		startAt += len(page.Issues)
-		if len(page.Issues) == 0 || startAt >= page.Total {
+		if page.IsLast || page.NextPageToken == "" || len(page.Issues) == 0 {
 			return all, nil
 		}
+		nextPageToken = page.NextPageToken
 	}
 }
 
diff --git a/specification.md b/specification.md
index 860ce79..87fda43 100644
--- a/specification.md
+++ b/specification.md
@@ -441,7 +441,7 @@ account** in that system, updated since `lastSyncAt − 5 min` (overlap window):
 
 | System | Query mechanism |
 |---|---|
-| Jira Cloud | `GET /rest/api/3/search?jql=assignee="<email>" AND project=<key> AND updated >= "<ts>"` (Basic auth: email+API token) |
+| Jira Cloud | `POST /rest/api/3/search/jql` with body `{jql:'assignee="<email>" AND project=<key> AND updated >= "<ts>"', fields, maxResults}`, cursor-paginated via `nextPageToken`/`isLast` (Basic auth: email+API token). The legacy `GET /rest/api/3/search` was removed by Atlassian — CHANGE-2046. |
 | Azure DevOps | `POST …/_apis/wit/wiql?api-version=7.1` with WIQL `[System.AssignedTo] = '<email>' AND [System.TeamProject] = '<project>' AND [System.ChangedDate] >= '<ts>'`, then batch `GET workitems` (PAT auth) |
 | YouTrack | `GET /api/issues?query=assignee: <login> project: <key> updated: <ts> .. *` (Bearer permanent token) |