diff --git a/Changelog b/Changelog
index 2fed1bf..854072a 100644
--- a/Changelog
+++ b/Changelog
@@ -1,3 +1,42 @@
+1.5:
+ The update to version 1.5 is rather substantial, and introduces some minor
+ backward-incompatibilities:
+ * The header "#!symbols" has been replaced by "#!virtual_fields"
+ * Multiplying polynomials using the '*' symbol is no longer supported (or,
+ rather, the symbolic capabilities of meankondo were enhanced, and the
+ syntax has been changed).
+ * 'meantools exp' has been removed (its functionality is now handled by
+ other means)
+ * 'meantoolds derive' has been replaced by 'meantools differentiate'
+
+ * The symbolic capabilities were enhanced: polynomials can now be
+ multiplied, added, exponentiated, and their logarithms can be taken
+ directly in the configuration file.
+
+ * The flow equation can now be processed after being computed using the
+ various "#!postprocess_*" entries.
+
+ * Deprecated kondo_preprocess.
+
+ * Compute the mean using an LU decomposition if possible.
+
+ * More detailed checks for syntax errors in configuration file.
+
+ * Check that different '#!group' entries are indeed uncorrelated.
+
+ * New flags in meankondo: '-p' and '-A'.
+
+ * New tool: meantools expand.
+
+ * Improve conversion to LaTeX using meantools-convert
+
+ * Assign terms randomly to different threads.
+
+ * Created vim files to implement syntax highlighting for configuration
+ files.
+
+ * Multiple bug fixes
+
1.4:
* Support MPFR floats in numkondo.
diff --git a/Makefile b/Makefile
index d0cd377..5b8c998 100644
--- a/Makefile
+++ b/Makefile
@@ -1,4 +1,4 @@
-## Copyright 2015 Ian Jauslin
+## Copyright 2015-2022 Ian Jauslin
##
## Licensed under the Apache License, Version 2.0 (the "License");
## you may not use this file except in compliance with the License.
@@ -62,10 +62,10 @@ SRCDIR=./src
OBJDIR=./objs
# objects
-LIBKONDO_OBJS = $(addprefix $(OBJDIR)/,array.o cli_parser.o coefficient.o fields.o grouped_polynomial.o idtable.o istring.o number.o parse_file.o polynomial.o rational_float.o rational_int.o rcc.o rcc_mpfr.o tools.o)
-MEANKONDO_OBJS = $(addprefix $(OBJDIR)/,meankondo.o mean.o)
+LIBKONDO_OBJS = $(addprefix $(OBJDIR)/,array.o cli_parser.o coefficient.o fields.o grouped_polynomial.o idtable.o istring.o number.o parse_file.o polynomial.o rational_float.o rational_int.o rcc.o rcc_mpfr.o symbolic_parser.o tree.o tools.o)
+MEANKONDO_OBJS = $(addprefix $(OBJDIR)/,meankondo.o determinant.o mean.o)
NUMKONDO_OBJS = $(addprefix $(OBJDIR)/,numkondo.o flow.o flow_mpfr.o)
-MEANTOOLS_OBJS = $(addprefix $(OBJDIR)/,meantools.o meantools_exp.o meantools_deriv.o meantools_eval.o)
+MEANTOOLS_OBJS = $(addprefix $(OBJDIR)/,meantools.o meantools_deriv.o meantools_eval.o meantools_expand.o)
KONDO_PP_OBJS = $(addprefix $(OBJDIR)/,kondo_preprocess.o kondo.o)
diff --git a/doc/meankondo-doc.html b/doc/meankondo-doc.html
index 7074b56..75c9583 100644
--- a/doc/meankondo-doc.html
+++ b/doc/meankondo-doc.html
@@ -1,7 +1,7 @@
-
-
+
+