diff --git a/.appveyor.yml b/.appveyor.yml
index 9371a957..9f23bc95 100644
--- a/.appveyor.yml
+++ b/.appveyor.yml
@@ -27,8 +27,8 @@ environment:
       # - {PY_VER: "38", PY_ARCH: "32"}
       # - {PY_VER: "38", PY_ARCH: "64"}
 
-    OPENSSL_VERSION: "1_1_1b"
-    POSTGRES_VERSION: "11_2"
+    OPENSSL_VERSION: "1_1_1d"
+    POSTGRES_VERSION: "11_5"
 
     PSYCOPG2_TESTDB: psycopg2_test
     PSYCOPG2_TESTDB_USER: postgres
diff --git a/scripts/appveyor.cache_rebuild b/scripts/appveyor.cache_rebuild
index c09e36d0..6b6f781a 100644
--- a/scripts/appveyor.cache_rebuild
+++ b/scripts/appveyor.cache_rebuild
@@ -9,10 +9,10 @@ To invalidate the cache, update this file and check it into git.
 Currently used modules built in the cache:
 
 OpenSSL
-        Version: 1.1.1b
+        Version: 1.1.1d
 
 PostgreSQL
-        Version: 11.2
+        Version: 11.5
 
 
 NOTE: to zap the cache manually you can also use: