diff --git a/core/bison/checksums b/core/bison/checksums
index 7b1edddd..1fa90e76 100644
--- a/core/bison/checksums
+++ b/core/bison/checksums
@@ -1 +1 @@
-039ee45b61d95e5003e7e8376f9080001b4066ff357bde271b7faace53b9d804  bison-3.3.2.tar.xz
+27159ac5ebf736dffd5636fd2cd625767c9e437de65baa63cb0de83570bd820d  bison-3.4.1.tar.xz
diff --git a/core/bison/sources b/core/bison/sources
index 894d06e9..b7ec9985 100644
--- a/core/bison/sources
+++ b/core/bison/sources
@@ -1 +1 @@
-https://ftp.gnu.org/gnu/bison/bison-3.3.2.tar.xz
+https://ftp.gnu.org/gnu/bison/bison-3.4.1.tar.xz
diff --git a/core/bison/version b/core/bison/version
index 02b654b7..89f6718d 100644
--- a/core/bison/version
+++ b/core/bison/version
@@ -1 +1 @@
-3.3.2 1
+3.4.1 1