diff --git a/Rakefile b/Rakefile
index be95343d7..6b44a2f83 100644
--- a/Rakefile
+++ b/Rakefile
@@ -94,7 +94,7 @@ end
 
 desc "Update list of server error codes"
 task :update_error_codes do
-	URL_ERRORCODES_TXT = "http://git.postgresql.org/gitweb/?p=postgresql.git;a=blob_plain;f=src/backend/utils/errcodes.txt;hb=refs/tags/REL_16_0"
+	URL_ERRORCODES_TXT = "http://git.postgresql.org/gitweb/?p=postgresql.git;a=blob_plain;f=src/backend/utils/errcodes.txt;hb=refs/tags/REL_17_0"
 
 	ERRORCODES_TXT = "ext/errorcodes.txt"
 	sh "wget #{URL_ERRORCODES_TXT.inspect} -O #{ERRORCODES_TXT.inspect} || curl #{URL_ERRORCODES_TXT.inspect} -o #{ERRORCODES_TXT.inspect}"
diff --git a/ext/errorcodes.def b/ext/errorcodes.def
index 5c501d790..ca0af630f 100644
--- a/ext/errorcodes.def
+++ b/ext/errorcodes.def
@@ -453,6 +453,10 @@
   VALUE klass = define_error_class( "IdleInTransactionSessionTimeout", "25" );
   register_error_class( "25P03", klass );
 }
+{
+  VALUE klass = define_error_class( "TransactionTimeout", "25" );
+  register_error_class( "25P04", klass );
+}
 {
   VALUE klass = define_error_class( "InvalidSqlStatementName", NULL );
   register_error_class( "26000", klass );
@@ -885,11 +889,6 @@
   VALUE klass = define_error_class( "DuplicateFile", "58" );
   register_error_class( "58P02", klass );
 }
-{
-  VALUE klass = define_error_class( "SnapshotTooOld", NULL );
-  register_error_class( "72000", klass );
-  register_error_class( "72", klass );
-}
 {
   VALUE klass = define_error_class( "ConfigFileError", NULL );
   register_error_class( "F0000", klass );
diff --git a/ext/errorcodes.txt b/ext/errorcodes.txt
index 3d244af13..3250d539e 100644
--- a/ext/errorcodes.txt
+++ b/ext/errorcodes.txt
@@ -2,7 +2,7 @@
 # errcodes.txt
 #      PostgreSQL error codes
 #
-# Copyright (c) 2003-2023, PostgreSQL Global Development Group
+# Copyright (c) 2003-2024, PostgreSQL Global Development Group
 #
 # This list serves as the basis for generating source files containing error
 # codes. It is kept in a common format to make sure all these source files have
@@ -252,6 +252,7 @@ Section: Class 25 - Invalid Transaction State
 25P01    E    ERRCODE_NO_ACTIVE_SQL_TRANSACTION                              no_active_sql_transaction
 25P02    E    ERRCODE_IN_FAILED_SQL_TRANSACTION                              in_failed_sql_transaction
 25P03    E    ERRCODE_IDLE_IN_TRANSACTION_SESSION_TIMEOUT                    idle_in_transaction_session_timeout
+25P04    E    ERRCODE_TRANSACTION_TIMEOUT                                    transaction_timeout
 
 Section: Class 26 - Invalid SQL Statement Name
 
@@ -439,10 +440,6 @@ Section: Class 58 - System Error (errors external to PostgreSQL itself)
 58P01    E    ERRCODE_UNDEFINED_FILE                                         undefined_file
 58P02    E    ERRCODE_DUPLICATE_FILE                                         duplicate_file
 
-Section: Class 72 - Snapshot Failure
-# (class borrowed from Oracle)
-72000    E    ERRCODE_SNAPSHOT_TOO_OLD                                       snapshot_too_old
-
 Section: Class F0 - Configuration File Error
 
 # (PostgreSQL-specific error class)