diff --git a/.appveyor.yml b/.appveyor.yml
index 1092a14f..54a71ab5 100644
--- a/.appveyor.yml
+++ b/.appveyor.yml
@@ -24,9 +24,8 @@ environment:
       - {PYVER: "34", PYTHON_ARCH: "32"}
       - {PYVER: "34", PYTHON_ARCH: "64"}
 
-
-    OPENSSL_VERSION: "1_0_2n"
-    POSTGRES_VERSION: "10_1"
+    OPENSSL_VERSION: "1_0_2r"
+    POSTGRES_VERSION: "11_2"
 
     PSYCOPG2_TESTDB: psycopg2_test
     PSYCOPG2_TESTDB_USER: postgres
diff --git a/scripts/appveyor.cache_rebuild b/scripts/appveyor.cache_rebuild
index 44a2a8b9..28cd082c 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: 1.0.2o
+        Version: 1.0.2r
 
 PostgreSQL
-        Version: 10.4
+        Version: 11.2
 
 
 NOTE: to zap the cache manually you can also use: