diff --git a/.travis.yml b/.travis.yml
index 098a607..3e566a5 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -2,3 +2,10 @@ language: erlang
 otp_release:
   - 17.1
   - 17.0
+  - R16B03-1
+  - R16B03
+  - R16B02
+  - R16B01
+  - R15B01
+  - R15B
+  - R14B04
diff --git a/rebar.config b/rebar.config
index 4864be7..0740581 100644
--- a/rebar.config
+++ b/rebar.config
@@ -1,5 +1,9 @@
 %% -*- erlang -*-
-{erl_opts,[debug_info, warnings_as_errors]}.
+
+%% Erlang releases after 17 don't put R in front of their name
+{erl_opts, [{platform_define, "^[0-9]+", namespaced_arrays},
+            debug_info,
+            warnings_as_errors]}.
 
 {deps_dir, ["deps"]}.
 {deps, [{edown, ".*",
diff --git a/test/ecirca_props.erl b/test/ecirca_props.erl
index ac5e2f1..cd024fc 100644
--- a/test/ecirca_props.erl
+++ b/test/ecirca_props.erl
@@ -18,12 +18,18 @@
 -export([initial_state/0, initial_state/4, command/1,
          precondition/2, postcondition/3, next_state/3]).
 
+-ifdef(namespaced_arrays).
+-type ecirca_array() :: array:array().
+-else.
+-type ecirca_array() :: array().
+-endif.
+
 -define(SERVER, ecirca).
 -define(TYPES, [last, max, min, avg, sum]).
 -define(VALUE_SIZES, [small, medium, large]).
 
 -record(state, {ecirca     = undefined       :: ecirca:ecirca() | undefined,
-                elements   = array:new()     :: array:array(),
+                elements   = array:new()     :: ecirca_array(),
                 size       = 0               :: pos_integer(),
                 value_size = medium          :: ecirca:ecirca_value_size(),
                 type       = last            :: ecirca:ecirca_type(),