diff --git a/CHANGES b/CHANGES
index 02eef34..799e538 100644
--- a/CHANGES
+++ b/CHANGES
@@ -1,3 +1,8 @@
+1.7.7 (2020-04-24)
+* sync with OCaml 4.10
+* mark ExtList.find_map deprecated in anticipation of type breakage in next release to match OCaml 4.10 function with same name
+* String: fold_left and fold_right without allocations
+
 1.7.6 (2019-03-03)
 * fix Dllist.skip with negative argument (Virgile Robles)
 * fix IO.read_bits 31 (Dan Korostelev)
diff --git a/Makefile b/Makefile
index 958d55e..445c699 100644
--- a/Makefile
+++ b/Makefile
@@ -1,6 +1,6 @@
 
 VERSION:=$(shell git --git-dir=.git describe --always --long)
-RELEASE:=1.7.6
+RELEASE:=1.7.7
 
 ifndef VERSION
 VERSION:=$(RELEASE)