diff --git a/core/bison/checksums b/core/bison/checksums
index c829f4d4..a3bb1244 100644
--- a/core/bison/checksums
+++ b/core/bison/checksums
@@ -1 +1 @@
-88d9e36856b004c0887a12ba00ea3c47db388519629483dd8c3fce9694d4da6f
+a3b5813f48a11e540ef26f46e4d288c0c25c7907d9879ae50e430ec49f63c010
diff --git a/core/bison/sources b/core/bison/sources
index 12ce625e..9d5346bd 100644
--- a/core/bison/sources
+++ b/core/bison/sources
@@ -1 +1 @@
-https://ftp.gnu.org/gnu/bison/bison-3.7.3.tar.xz
+https://ftp.gnu.org/gnu/bison/bison-3.7.4.tar.xz
diff --git a/core/bison/version b/core/bison/version
index 3f0b66c4..859dfa3f 100644
--- a/core/bison/version
+++ b/core/bison/version
@@ -1 +1 @@
-3.7.3 1
+3.7.4 1