diff --git a/debian/changelog b/debian/changelog
index b19291c3..bdef3611 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -1,3 +1,15 @@
+simtrace2 (0.9.1) unstable; urgency=medium
+
+  [ Oliver Smith ]
+  * Generate a version.h file
+  * firmware: replace libnewlib with picolibc
+  * firmware/Makefile: remove -Wredundant-decls
+
+  [ Harald Welte ]
+  * Use gsmtap_inst_fd2() to remove compiler warning
+
+ -- Oliver Smith <osmith@sysmocom.de>  Wed, 08 Jul 2026 08:47:19 +0200
+
 simtrace2 (0.9.0) unstable; urgency=medium
 
   [ Oliver Smith ]
diff --git a/host/lib/Makefile.am b/host/lib/Makefile.am
index dbcb3f81..f99f0ac2 100644
--- a/host/lib/Makefile.am
+++ b/host/lib/Makefile.am
@@ -1,7 +1,7 @@
 # This is _NOT_ the library release version, it's an API version.
 # Please read chapter "Library interface versions" of the libtool documentation
 # before making any modifications: https://www.gnu.org/software/libtool/manual/html_node/Versioning.html
-ST2_LIBVERSION=2:0:1
+ST2_LIBVERSION=2:1:1
 
 AM_CPPFLAGS = $(all_includes) -I$(top_srcdir)/include -I$(top_builddir)
 AM_CFLAGS= -Wall $(LIBOSMOCORE_CFLAGS) $(LIBOSMOSIM_CFLAGS) $(LIBUSB_CFLAGS) $(COVERAGE_CFLAGS)