diff --git a/Dockerfile b/Dockerfile
index fc9f706..2e70b10 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -19,10 +19,17 @@ RUN mkdir -p ${SERVER_DIR}/plugins/ViaVersion \
 WORKDIR ${SERVER_DIR}
 
 # ─── Baixar Paper ───
-RUN apt-get update && apt-get install -y --no-install-recommends curl && \
-    curl -L -o paper-${PAPER_VERSION}.jar \
-    "https://api.papermc.io/v2/projects/paper/versions/${PAPER_VERSION}/builds/latest/downloads/paper-${PAPER_VERSION}.jar" && \
-    apt-get purge -y curl && apt-get autoremove -y && rm -rf /var/lib/apt/lists/*
+# A API v2 (api.papermc.io/v2) foi DESCONTINUADA (sunset) e retorna 404.
+# Usamos a API fill v3 para obter os metadados do build mais recente e
+# extrair a URL real de download (hospedada em fill-data.papermc.io).
+RUN apt-get update && apt-get install -y --no-install-recommends curl ca-certificates unzip && \
+    PAPER_META=$(curl -sL "https://fill.papermc.io/v3/projects/paper/versions/${PAPER_VERSION}/builds/latest") && \
+    PAPER_URL=$(echo "$PAPER_META" | grep -oE 'https://fill-data[^"]+\.jar' | head -1) && \
+    if [ -z "$PAPER_URL" ]; then echo "ERRO: nao foi possivel obter a URL do Paper ${PAPER_VERSION}" >&2; exit 1; fi && \
+    echo "Baixando Paper de: $PAPER_URL" && \
+    curl -L -o paper-${PAPER_VERSION}.jar "$PAPER_URL" && \
+    unzip -tqq paper-${PAPER_VERSION}.jar > /dev/null && \
+    apt-get purge -y curl unzip && apt-get autoremove -y && rm -rf /var/lib/apt/lists/*
 
 # ─── Baixar Plugins ───
 RUN apt-get update && apt-get install -y --no-install-recommends curl && \
diff --git a/scripts/setup.bat b/scripts/setup.bat
index bbec2c6..bb75537 100644
--- a/scripts/setup.bat
+++ b/scripts/setup.bat
@@ -32,7 +32,8 @@ if exist "%PAPER_JAR%" (
     echo [WARN] %PAPER_JAR% ja existe. Pulando download.
 ) else (
     echo [INFO] Baixando Paper %PAPER_VERSION%...
-    powershell -Command "Invoke-WebRequest -Uri 'https://api.papermc.io/v2/projects/paper/versions/%PAPER_VERSION%/builds/latest/downloads/paper-%PAPER_VERSION%.jar' -OutFile '%PAPER_JAR%'"
+    REM A API v2 foi DESCONTINUADA (sunset). Usamos a API fill v3 para obter a URL real.
+    powershell -Command "$meta = Invoke-RestMethod -Uri 'https://fill.papermc.io/v3/projects/paper/versions/%PAPER_VERSION%/builds/latest'; Invoke-WebRequest -Uri $meta.downloads.'server:default'.url -OutFile '%PAPER_JAR%'"
     echo [OK] Paper baixado.
 )