diff --git a/NEWS b/NEWS
index db30df1d2..9cb317283 100644
--- a/NEWS
+++ b/NEWS
@@ -1,3 +1,18 @@
+strongswan-5.5.1
+----------------
+
+- The newhope plugin implements the post-quantum NewHope key exchange algorithm
+  proposed in their 2015 paper by Erdem Alkim, Léo Ducas, Thomas Pöppelmann and
+  Peter Schwabe.
+
+- The VICI flush-certs commands flushes certificates from the volatile
+  certificate cache. Optionally the type of the certificates to be
+  flushed  (e.g. type = x509_crl) can be specified.
+
+- libtpmtss: In the TSS2 API the function TeardownSocketTcti() was replaced by
+  tss2_tcti_finalize().
+
+
 strongswan-5.5.0
 ----------------
 
diff --git a/configure.ac b/configure.ac
index 40ef5c090..7c7e97f8d 100644
--- a/configure.ac
+++ b/configure.ac
@@ -19,7 +19,7 @@
 #  initialize & set some vars
 # ============================
 
-AC_INIT([strongSwan],[5.5.1dr2])
+AC_INIT([strongSwan],[5.5.1dr3])
 AM_INIT_AUTOMAKE(m4_esyscmd([
 	echo tar-ustar
 	echo subdir-objects