diff --git a/requirements.txt b/requirements.txt
index 2e2e788..71b4fd1 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -2,7 +2,7 @@
 darts[all]>=0.47.0
 pandas==3.0.3  # temporary pin: 3.0.4 breaks the action — see pandas-dev/pandas#66085
 numpy>=2.1
-prophet>=1.3
+prophet>=1.4.0
 scikit-learn>=1.8
 torch>=2.10,<2.11  # upper cap: torch 2.11 + pandas 3 segfault in XGBoost training — see issue #29
 # tensorflow>=2.15.0