diff --git a/Changelog.md b/Changelog.md
index 4eb93ad..75d62ed 100644
--- a/Changelog.md
+++ b/Changelog.md
@@ -1,5 +1,26 @@
 # Changelog
 
+## [0.99] - 2026-09-04
+
+- requires collocatordb 1.8.0, in which Log-Dice is computed as Rychlý (2008)
+  defines it, without the window size factor that used to be applied to the
+  frequency of the node. LD values are higher than before, by up to the binary
+  logarithm of the window size, and comparable to those of other tools such as
+  Sketch Engine. Building against an older collocatordb would show the previous
+  values under the new explanations, which is why the minimum version is
+  enforced
+- LDaf and the order of the collocates are unchanged. It is the auto focus
+  score, not Log-Dice of the auto focus window, and its denominator grows with
+  the width of the selected window, which is what makes it sensitive to how
+  concentrated a pair is. Its tooltip gives the formula and notes that it is
+  therefore not on the same scale as LD
+- the info tab explains that LL, MI, MI², MI³ and nPMI are computed over the
+  attested positions, i.e. those in which the collocate occurs at least once,
+  rather than over the whole context window, and that their values are
+  therefore not directly comparable to those of tools computing with a fixed
+  window size. The term auto focus is reserved for the selection of positions
+  that yields the highest score, as Belica coined it for the CCDB
+
 ## [0.98] - 2026-08-21
 
 - the per request diagnostics of the vector code are off unless
diff --git a/Makefile.PL b/Makefile.PL
index 08fa3a6..3f847d3 100644
--- a/Makefile.PL
+++ b/Makefile.PL
@@ -9,7 +9,7 @@
 check_lib_or_exit(
     cflags => '-Wall -Wno-unused-result -fno-rtti -O4 -I/usr/local/include',
     header => ['unistd.h', 'stdio.h', 'stdlib.h', 'string.h', 'collocatordb.h'],
-    function => 'char *min_v = "1.5.0"; char *v = get_version(); if(strcmp(min_v, v) <= 0) { return 0; } else { fprintf(stderr, "Installed collocatordb version %s is too low. Minimally %s is required.\n", v, min_v); return(1); }',
+    function => 'char *min_v = "1.8.0"; char *v = get_version(); if(strcmp(min_v, v) <= 0) { return 0; } else { fprintf(stderr, "Installed collocatordb version %s is too low. Minimally %s is required.\n", v, min_v); return(1); }',
     libpath => ['/usr/lib', '/usr/local/lib64', '/usr/local/lib'],
     incpath => ['/usr/include', '/usr/local/include'],
     # debug => 1,
diff --git a/script/derekovecs-server b/script/derekovecs-server
index 184bed0..c69ef28 100755
--- a/script/derekovecs-server
+++ b/script/derekovecs-server
@@ -1,6 +1,6 @@
 #!/usr/bin/env perl
 
-our $VERSION = '0.98';
+our $VERSION = '0.99';
 
 use IDS::DeReKoVecs::Read;
 use Mojolicious::Lite;