diff --git a/config/programs.m4 b/config/programs.m4
index e7908d8793..bcdfbc3a51 100644
--- a/config/programs.m4
+++ b/config/programs.m4
@@ -22,8 +22,8 @@ fi
 # PGAC_PATH_BISON
 # ---------------
 # Look for Bison, set the output variable BISON to its path if found.
-# Reject versions before 1.875 (they have bugs or capacity limits).
-# Note we do not accept other implementations of yacc.
+# Reject versions before 2.3 (the earliest version in the buildfarm
+# as of 2022). Note we do not accept other implementations of yacc.
 
 AC_DEFUN([PGAC_PATH_BISON],
 [PGAC_PATH_PROGS(BISON, bison)
@@ -31,11 +31,11 @@ AC_DEFUN([PGAC_PATH_BISON],
 if test "$BISON"; then
   pgac_bison_version=`$BISON --version 2>/dev/null | sed q`
   AC_MSG_NOTICE([using $pgac_bison_version])
-  if echo "$pgac_bison_version" | $AWK '{ if ([$]4 < 1.875) exit 0; else exit 1;}'
+  if echo "$pgac_bison_version" | $AWK '{ if ([$]4 < 2.3) exit 0; else exit 1;}'
   then
     AC_MSG_WARN([
 *** The installed version of Bison, $BISON, is too old to use with PostgreSQL.
-*** Bison version 1.875 or later is required, but this is $pgac_bison_version.])
+*** Bison version 2.3 or later is required, but this is $pgac_bison_version.])
     BISON=""
   fi
   # Bison >=3.0 issues warnings about %name-prefix="base_yy", instead
diff --git a/configure b/configure
index a268780c5d..4a725ab205 100755
--- a/configure
+++ b/configure
@@ -10218,14 +10218,14 @@ if test "$BISON"; then
   pgac_bison_version=`$BISON --version 2>/dev/null | sed q`
   { $as_echo "$as_me:${as_lineno-$LINENO}: using $pgac_bison_version" >&5
 $as_echo "$as_me: using $pgac_bison_version" >&6;}
-  if echo "$pgac_bison_version" | $AWK '{ if ($4 < 1.875) exit 0; else exit 1;}'
+  if echo "$pgac_bison_version" | $AWK '{ if ($4 < 2.3) exit 0; else exit 1;}'
   then
     { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING:
 *** The installed version of Bison, $BISON, is too old to use with PostgreSQL.
-*** Bison version 1.875 or later is required, but this is $pgac_bison_version." >&5
+*** Bison version 2.3 or later is required, but this is $pgac_bison_version." >&5
 $as_echo "$as_me: WARNING:
 *** The installed version of Bison, $BISON, is too old to use with PostgreSQL.
-*** Bison version 1.875 or later is required, but this is $pgac_bison_version." >&2;}
+*** Bison version 2.3 or later is required, but this is $pgac_bison_version." >&2;}
     BISON=""
   fi
   # Bison >=3.0 issues warnings about %name-prefix="base_yy", instead
diff --git a/contrib/cube/cubeparse.y b/contrib/cube/cubeparse.y
index 6cceae8e99..977dcba965 100644
--- a/contrib/cube/cubeparse.y
+++ b/contrib/cube/cubeparse.y
@@ -15,10 +15,7 @@
 /*
  * Bison doesn't allocate anything that needs to live across parser calls,
  * so we can easily have it use palloc instead of malloc.  This prevents
- * memory leaks if we error out during parsing.  Note this only works with
- * bison >= 2.0.  However, in bison 1.875 the default is to use alloca()
- * if possible, so there's not really much problem anyhow, at least if
- * you're building with gcc.
+ * memory leaks if we error out during parsing.
  */
 #define YYMALLOC palloc
 #define YYFREE   pfree
diff --git a/contrib/seg/segparse.y b/contrib/seg/segparse.y
index 637eacd1a6..1d2adbbec8 100644
--- a/contrib/seg/segparse.y
+++ b/contrib/seg/segparse.y
@@ -13,10 +13,7 @@
 /*
  * Bison doesn't allocate anything that needs to live across parser calls,
  * so we can easily have it use palloc instead of malloc.  This prevents
- * memory leaks if we error out during parsing.  Note this only works with
- * bison >= 2.0.  However, in bison 1.875 the default is to use alloca()
- * if possible, so there's not really much problem anyhow, at least if
- * you're building with gcc.
+ * memory leaks if we error out during parsing.
  */
 #define YYMALLOC palloc
 #define YYFREE   pfree
diff --git a/doc/src/sgml/install-windows.sgml b/doc/src/sgml/install-windows.sgml
index 11e153578c..499fd59bf0 100644
--- a/doc/src/sgml/install-windows.sgml
+++ b/doc/src/sgml/install-windows.sgml
@@ -219,7 +219,7 @@ $ENV{MSBFLAGS}="/m";
      <para>
       <productname>Bison</productname> and <productname>Flex</productname> are
       required to build from Git, but not required when building from a release
-      file. Only <productname>Bison</productname> 1.875 or versions 2.2 and later
+      file. Only <productname>Bison</productname> versions 2.3 and later
       will work. <productname>Flex</productname> must be version 2.5.31 or later.
      </para>
 
diff --git a/doc/src/sgml/installation.sgml b/doc/src/sgml/installation.sgml
index 70d188e2bc..7f7f8428e1 100644
--- a/doc/src/sgml/installation.sgml
+++ b/doc/src/sgml/installation.sgml
@@ -315,7 +315,7 @@ su - postgres
       are needed to build from a Git checkout, or if you changed the actual
       scanner and parser definition files. If you need them, be sure
       to get <application>Flex</application> 2.5.31 or later and
-      <application>Bison</application> 1.875 or later. Other <application>lex</application>
+      <application>Bison</application> 2.3 or later. Other <application>lex</application>
       and <application>yacc</application> programs cannot be used.
      </para>
     </listitem>
diff --git a/src/backend/bootstrap/bootparse.y b/src/backend/bootstrap/bootparse.y
index c45ddde67f..e6d62d81c1 100644
--- a/src/backend/bootstrap/bootparse.y
+++ b/src/backend/bootstrap/bootparse.y
@@ -36,10 +36,7 @@
 /*
  * Bison doesn't allocate anything that needs to live across parser calls,
  * so we can easily have it use palloc instead of malloc.  This prevents
- * memory leaks if we error out during parsing.  Note this only works with
- * bison >= 2.0.  However, in bison 1.875 the default is to use alloca()
- * if possible, so there's not really much problem anyhow, at least if
- * you're building with gcc.
+ * memory leaks if we error out during parsing.
  */
 #define YYMALLOC palloc
 #define YYFREE   pfree
diff --git a/src/backend/parser/gram.y b/src/backend/parser/gram.y
index 0492ff9a66..ea33784316 100644
--- a/src/backend/parser/gram.y
+++ b/src/backend/parser/gram.y
@@ -103,10 +103,7 @@
 /*
  * Bison doesn't allocate anything that needs to live across parser calls,
  * so we can easily have it use palloc instead of malloc.  This prevents
- * memory leaks if we error out during parsing.  Note this only works with
- * bison >= 2.0.  However, in bison 1.875 the default is to use alloca()
- * if possible, so there's not really much problem anyhow, at least if
- * you're building with gcc.
+ * memory leaks if we error out during parsing.
  */
 #define YYMALLOC palloc
 #define YYFREE   pfree
diff --git a/src/backend/replication/repl_gram.y b/src/backend/replication/repl_gram.y
index b343f108d3..8ff6ab362f 100644
--- a/src/backend/replication/repl_gram.y
+++ b/src/backend/replication/repl_gram.y
@@ -29,10 +29,7 @@ Node *replication_parse_result;
 /*
  * Bison doesn't allocate anything that needs to live across parser calls,
  * so we can easily have it use palloc instead of malloc.  This prevents
- * memory leaks if we error out during parsing.  Note this only works with
- * bison >= 2.0.  However, in bison 1.875 the default is to use alloca()
- * if possible, so there's not really much problem anyhow, at least if
- * you're building with gcc.
+ * memory leaks if we error out during parsing.
  */
 #define YYMALLOC palloc
 #define YYFREE   pfree
diff --git a/src/backend/replication/syncrep_gram.y b/src/backend/replication/syncrep_gram.y
index 4fc3647da1..c18ddb2e9b 100644
--- a/src/backend/replication/syncrep_gram.y
+++ b/src/backend/replication/syncrep_gram.y
@@ -26,10 +26,7 @@ static SyncRepConfigData *create_syncrep_config(const char *num_sync,
 /*
  * Bison doesn't allocate anything that needs to live across parser calls,
  * so we can easily have it use palloc instead of malloc.  This prevents
- * memory leaks if we error out during parsing.  Note this only works with
- * bison >= 2.0.  However, in bison 1.875 the default is to use alloca()
- * if possible, so there's not really much problem anyhow, at least if
- * you're building with gcc.
+ * memory leaks if we error out during parsing.
  */
 #define YYMALLOC palloc
 #define YYFREE   pfree
diff --git a/src/backend/utils/adt/jsonpath_gram.y b/src/backend/utils/adt/jsonpath_gram.y
index 35a79ca965..7e28853a57 100644
--- a/src/backend/utils/adt/jsonpath_gram.y
+++ b/src/backend/utils/adt/jsonpath_gram.y
@@ -45,10 +45,7 @@ static JsonPathParseItem *makeItemLikeRegex(JsonPathParseItem *expr,
 /*
  * Bison doesn't allocate anything that needs to live across parser calls,
  * so we can easily have it use palloc instead of malloc.  This prevents
- * memory leaks if we error out during parsing.  Note this only works with
- * bison >= 2.0.  However, in bison 1.875 the default is to use alloca()
- * if possible, so there's not really much problem anyhow, at least if
- * you're building with gcc.
+ * memory leaks if we error out during parsing.
  */
 #define YYMALLOC palloc
 #define YYFREE   pfree
diff --git a/src/pl/plpgsql/src/pl_gram.y b/src/pl/plpgsql/src/pl_gram.y
index 0b8aea9504..f7cf2b4b89 100644
--- a/src/pl/plpgsql/src/pl_gram.y
+++ b/src/pl/plpgsql/src/pl_gram.y
@@ -39,10 +39,7 @@
 /*
  * Bison doesn't allocate anything that needs to live across parser calls,
  * so we can easily have it use palloc instead of malloc.  This prevents
- * memory leaks if we error out during parsing.  Note this only works with
- * bison >= 2.0.  However, in bison 1.875 the default is to use alloca()
- * if possible, so there's not really much problem anyhow, at least if
- * you're building with gcc.
+ * memory leaks if we error out during parsing.
  */
 #define YYMALLOC palloc
 #define YYFREE   pfree
diff --git a/src/tools/msvc/pgbison.pl b/src/tools/msvc/pgbison.pl
index 3974c30d96..60935adbaa 100644
--- a/src/tools/msvc/pgbison.pl
+++ b/src/tools/msvc/pgbison.pl
@@ -16,7 +16,7 @@ do './src/tools/msvc/buildenv.pl' if -e 'src/tools/msvc/buildenv.pl';
 my ($bisonver) = `bison -V`;    # grab first line
 $bisonver = (split(/\s+/, $bisonver))[3];    # grab version number
 
-unless ($bisonver eq '1.875' || $bisonver ge '2.2')
+unless ($bisonver ge '2.3')
 {
 	print "WARNING! Bison install not found, or unsupported Bison version.\n";
 	print "echo Attempting to build without.\n";