diff --git a/requirements.txt b/requirements.txt
index cbfae4c0d..3d495277e 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,7 +1,7 @@
 numpy>=1.15.0
 cymem>=2.0.2,<2.1.0
 preshed>=2.0.1,<2.1.0
-thinc==7.0.0.dev3
+thinc==7.0.0.dev4
 blis>=0.2.2,<0.3.0
 murmurhash>=0.28.0,<1.1.0
 cytoolz>=0.9.0,<0.10.0
diff --git a/setup.py b/setup.py
index 363a1914e..05d074f28 100755
--- a/setup.py
+++ b/setup.py
@@ -200,7 +200,7 @@ def setup_package():
                 "murmurhash>=0.28.0,<1.1.0",
                 "cymem>=2.0.2,<2.1.0",
                 "preshed>=2.0.1,<2.1.0",
-                "thinc==7.0.0.dev3",
+                "thinc==7.0.0.dev4",
                 "blis>=0.2.2,<0.3.0",
                 "plac<1.0.0,>=0.9.6",
                 "ujson>=1.35",