diff --git a/examples/experiments/onto-joint/defaults.cfg b/examples/experiments/onto-joint/defaults.cfg
index 0fdbc5cf5..6c3a21f4b 100644
--- a/examples/experiments/onto-joint/defaults.cfg
+++ b/examples/experiments/onto-joint/defaults.cfg
@@ -114,3 +114,4 @@ window_size = 1
 embed_size = 10000
 maxout_pieces = 3
 subword_features = true
+dropout = null
diff --git a/examples/experiments/ptb-joint-pos-dep/bilstm_tok2vec.cfg b/examples/experiments/ptb-joint-pos-dep/bilstm_tok2vec.cfg
index fdd4139f8..52faad9ec 100644
--- a/examples/experiments/ptb-joint-pos-dep/bilstm_tok2vec.cfg
+++ b/examples/experiments/ptb-joint-pos-dep/bilstm_tok2vec.cfg
@@ -66,3 +66,4 @@ depth = 4
 embed_size = 2000
 subword_features = true
 maxout_pieces = 3
+dropout = null
\ No newline at end of file
diff --git a/examples/experiments/ptb-joint-pos-dep/defaults.cfg b/examples/experiments/ptb-joint-pos-dep/defaults.cfg
index 5b369d782..c305c015c 100644
--- a/examples/experiments/ptb-joint-pos-dep/defaults.cfg
+++ b/examples/experiments/ptb-joint-pos-dep/defaults.cfg
@@ -67,3 +67,4 @@ window_size = 1
 embed_size = 2000
 maxout_pieces = 3
 subword_features = true
+dropout = null
diff --git a/examples/experiments/tok2vec-ner/charembed_tok2vec.cfg b/examples/experiments/tok2vec-ner/charembed_tok2vec.cfg
index 8e5c3a276..eca6a22fa 100644
--- a/examples/experiments/tok2vec-ner/charembed_tok2vec.cfg
+++ b/examples/experiments/tok2vec-ner/charembed_tok2vec.cfg
@@ -37,6 +37,7 @@ nM = 64
 nC = 8
 rows = 2000
 columns = ["ID", "NORM", "PREFIX", "SUFFIX", "SHAPE", "ORTH"]
+dropout = null
 
 [nlp.pipeline.tok2vec.model.extract.features]
 @architectures = "spacy.Doc2Feats.v1"
diff --git a/examples/experiments/tok2vec-ner/multihashembed_tok2vec.cfg b/examples/experiments/tok2vec-ner/multihashembed_tok2vec.cfg
index 149b8ea66..a5fa32b18 100644
--- a/examples/experiments/tok2vec-ner/multihashembed_tok2vec.cfg
+++ b/examples/experiments/tok2vec-ner/multihashembed_tok2vec.cfg
@@ -45,3 +45,4 @@ maxout_pieces = 3
 window_size = 1
 subword_features = true
 pretrained_vectors = null
+dropout = null