diff --git a/requirements/requirements.txt b/requirements/requirements.txt
index ed4985dd..15931d07 100644
--- a/requirements/requirements.txt
+++ b/requirements/requirements.txt
@@ -14,4 +14,4 @@ pyahocorasick==2.1.0 # required for fasta functionality, imported as "ahocorasic
 pyteomics==4.7.5 # required for msfragger reader
 pyyaml==6.0.2
 lxml==5.3.0  # required by pyteomics (-> msfragger reader)
-certifi==2025.11.12
+certifi==2026.10.19