diff --git a/.github/scripts/hygiene-preamble.sh b/.github/scripts/hygiene-preamble.sh
index 130e05e9cc8..2285e14a74a 100644
--- a/.github/scripts/hygiene-preamble.sh
+++ b/.github/scripts/hygiene-preamble.sh
@@ -1,7 +1,5 @@
 #!/bin/bash -xue
 
-. .github/scripts/preamble.sh
-
 if [ "$GITHUB_EVENT_NAME" = "pull_request" ] && [ "x" = "x$BASE_REF_SHA$PR_REF_SHA" ] ; then
   echo "Variables BASE_REF_SHA and PR_REF_SHA must be defined in a pull request job"
   exit 2
diff --git a/shell/install.sh b/shell/install.sh
index 674091c5018..273edf9fe41 100755
--- a/shell/install.sh
+++ b/shell/install.sh
@@ -5,12 +5,14 @@ set -ue
 # (c) Copyright Fabrice Le Fessant INRIA/OCamlPro 2013
 # (c) Copyright Louis Gesbert OCamlPro 2014-2017
 
-VERSION='2.1.0'
-DEV_VERSION='2.1.0'
+VERSION='2.1.1'
+DEV_VERSION='2.1.1'
 DEFAULT_BINDIR=/usr/local/bin
 
 bin_sha512() {
   case "$OPAM_BIN" in
+    ### opam 2.0 series ###
+
     opam-2.0.6-arm64-linux)     echo "d2b3d92fd5fae7f053702b53ddbc7c224fcfbfc9b232247ba4e40cbf1cda28f160d8c14fde87aebeebfd2545e13265c0ee4a47e292f035767fb944b1b8ff5c90";;
     opam-2.0.6-armhf-linux)     echo "a42a7ad8c1afdb20ac5746934306576e6364f5453b176ccd42a3e5a116a5db05c2758cec31800ffab11411290cf671f9eee3f299df48c7ceca8e4d7e33dfedc8";;
     opam-2.0.6-i686-linux)      echo "6c0d965f89a2026ead3120e217d12b2df7426740d54bc94e2c46faaeff5893081e68aac162621bfa694ab597a18be28165f10cdda1217a4d73653789a9928b64";;
@@ -42,6 +44,16 @@ bin_sha512() {
     opam-2.0.9-x86_64-macos)    echo "6792d3d913cf800f974ff48f99348b58331d6ab7434c41d356ac6aae19292e16b213afdcad2cd387b4095d7c64b4d9c8dcd561f1679c7ce0513ffdb73f5a25d8";;
     opam-2.0.9-x86_64-openbsd)  echo "d83cace0fb9541e3748e520ddfc81ade8ae258eea461089fcdc903c9b0845fbc3ea4071ff96b5854ec630d68bbddaef7bcbf5bd0a6324f18e1574ac6be811890";;
 
+    opam-2.0.10-arm64-linux)     echo "cef611335dd406bad9bc70b10345938d054a19824dcef474471216d1ba08454a827927ad014d49485fb4e7fd808cfaa041ef90081505a42838809c090b089966";;
+    opam-2.0.10-arm64-macos)     echo "6cffe9457d6b1b0df1255776f93bef242316a03ff4c3ac3802f45921abf9d17a1396361ad947591351f7c4f7e5072dab758c952ab7822ede76c24b7dc1a12803";;
+    opam-2.0.10-armhf-linux)     echo "61cac30543becfe217018cd999160b4e77435c43a8c8a9203d713ed3bb2cf14ba02901688a14a377186709d5fb4c24b0fc9ba2027a4c9ce1ceff7c0a955568a2";;
+    opam-2.0.10-i686-linux)      echo "31b8a3e6afe6c5ca5ff5d921b4ed8ed3255131c184e9af19f5268c743d49a0789f9a5b780261d988b836b11eadf801f279d3538cb46dc66d753b6d12232e98b8";;
+    opam-2.0.10-x86_64-linux)    echo "f644038fd8ebcebba1bbdf3550a2dee05c8b8da92b78e83fc085c9b8f3c78c654170c83971c651e86a16731271ecdf8903fb9fdd9b6dcd65679ce97c111ca631";;
+    opam-2.0.10-x86_64-macos)    echo "0f6a8e38200bc7592fb49819d1c4c4d8834fa5185de16a3409d563b6308a484dd60590ecc96992b36d59ef908f5843a98b607161e124de700bb01dd4f2a88c39";;
+    opam-2.0.10-x86_64-openbsd)  echo "fd8cb4a387283eebd9db58ab5c090e674f0885117a34622ef9db7f9380003d2b84341cf9adaab7367eecb5773f96770d21db1d4cd4a0849b22427830ab4a1475";;
+
+    ### opam 2.1 series ###
+
     opam-2.1.0-alpha-arm64-linux)     echo "1bf0acfa64aa01c3244e65eed60eef1caaa6de53aa8b32dd0d2446f91905a1e41591f53cd350e85b2b9f5edba9b137d723c32949115623e9753e77b707bb25b0";;
     opam-2.1.0-alpha-armhf-linux)     echo "87c12a422bd14a0d10a94ddaaa46de23700e3b89810a0c06232eff8d96b37c2fd43dcb5a8da5a2004aa8040d1b93293209f1ff1aab865ffd150364e24c87c716";;
     opam-2.1.0-alpha-i686-linux)      echo "b8369da6d4795a461ff1b49e687b027325d4e90bc8f19517e52a94ee3be167c4faaaf33bd0b3536be552d2add54865d0e33933acaa674f2e1a17249b022738af";;
@@ -116,6 +128,14 @@ bin_sha512() {
     opam-2.1.0-x86_64-macos)    echo "1c9acee545c851dd3701229e3a6aa7b5650620e37e01400d797a4b1fbeeb614adc459411283684e223a72fda8b14ba6c6e5482661485f888819f6a2a02e4d279";;
     opam-2.1.0-x86_64-openbsd)  echo "d53bab13e38f9e1304e08ad437b5486263451d754c9ba5feb638a34d2d2acaeef412eeae4bc9fb6bc7ee9c07539a88e02029162dbfbb095248255bc7d772213d";;
 
+    opam-2.1.1-arm64-linux)     echo "503875dff416bc76966d58be6e9236662fc7c598d705a913ba3a3cf9861008ce598dddf2df17dbb13c2fc2e64346e54f001483ab512b50a11a36da178c67b7d6";;
+    opam-2.1.1-arm64-macos)     echo "eea30844d867f36e8359ed8987e0b094e4077c845aa3e1c962dc5e476831eb97ff809aa1533c6d28ae8c36d0febf20eedef69e161a86971a46bffa6ea8d41790";;
+    opam-2.1.1-armhf-linux)     echo "8bdecf77a19e173f2ffc0cee2f668411ab680a3e8669095e9d95c1d36cf03d269b89b1f314c96f00590d46c5b89f6763a960803ed0b88456b8dd707e8bcdbb78";;
+    opam-2.1.1-i686-linux)      echo "94feacfc35184a27b9e6ee6a04cb71d5764b4daa36504eaed34130033e0fb80828c1a750422df943d54c8911b1f83e67e67e77d8214751f689fc3445c4a71f84";;
+    opam-2.1.1-x86_64-linux)    echo "494d32320d09eb2cb4d94e06d0133db1cbfccdf7a673eacffca4f190684497d9f4273680222cb197d88353f67661219675df58753b393dd5faf32400bf8ce044";;
+    opam-2.1.1-x86_64-macos)    echo "3b88eeaf523b4820b7909f4f38dce33b9ca77c27b5008cc2d1100176ee54c0f2df5b6c427973fbcc850bda942ea8c3d4b113c3bc05c3a8ddaf4a2d46f8eec65f";;
+    opam-2.1.1-x86_64-openbsd)  echo "09d7f392754a12b812d698ef3dab646f53e1f1f5cd591e1fdffb017a948798e5ba8758207ffdc3be7a5fab97df711ca896bf4b2897ca85af2f88ff0f7ae78e28";;
+
     *) echo "no sha";;
   esac
 }