diff --git a/core/bison/checksums b/core/bison/checksums
index d2834914..178d522f 100644
--- a/core/bison/checksums
+++ b/core/bison/checksums
@@ -1 +1 @@
-4a164b5cc971b896ce976bf4b624fab7279e0729cf983a5135df7e4df0970f6e  bison-3.6.2.tar.xz
+06db793651de9dd5f0a85a6fe4bdbca413c0806bf2432377523da96ca0b4b73d  bison-3.6.3.tar.xz
diff --git a/core/bison/sources b/core/bison/sources
index e955688f..680e87fa 100644
--- a/core/bison/sources
+++ b/core/bison/sources
@@ -1 +1 @@
-https://ftp.gnu.org/gnu/bison/bison-3.6.2.tar.xz
+https://ftp.gnu.org/gnu/bison/bison-3.6.3.tar.xz
diff --git a/core/bison/version b/core/bison/version
index ee7527fc..4ea97d0c 100644
--- a/core/bison/version
+++ b/core/bison/version
@@ -1 +1 @@
-3.6.2 1
+3.6.3 1