diff --git a/spec/abci/abci.md b/spec/abci/abci.md
index f53784b4a..8e5a5f588 100644
--- a/spec/abci/abci.md
+++ b/spec/abci/abci.md
@@ -617,6 +617,7 @@ via light client.
     - In Cosmos-SDK based blockchains, `MaxAgeDuration` is usually equal to the
       unbonding period. `MaxAgeNumBlocks` is calculated by dividing the unboding
       period by the average block time (e.g. 2 weeks / 6s per block = 2d8h).
+  - `MaxNum (uint32)`: The maximum number of evidence that can be committed to a single block
 
 ### ValidatorParams
 
diff --git a/spec/abci/apps.md b/spec/abci/apps.md
index 4c44e85e6..74d0985b2 100644
--- a/spec/abci/apps.md
+++ b/spec/abci/apps.md
@@ -289,6 +289,15 @@ for it).
 
 Must have `MaxAgeNumBlocks > 0`.
 
+### EvidenceParams.MaxNum
+
+This is the maximum number of evidence that can be committed to a single block
+
+The product of this and the `MaxEvidenceBytes` must not exceed the size of 
+a block minus it's overhead ( ~ `MaxBytes`)
+
+The amount must be a positive number
+
 ### Updates
 
 The application may set the ConsensusParams during InitChain, and update them during
diff --git a/spec/abci/client-server.md b/spec/abci/client-server.md
index 57924f7c2..95b9238b5 100644
--- a/spec/abci/client-server.md
+++ b/spec/abci/client-server.md
@@ -35,7 +35,6 @@ appropriately (ie. to `socket` or `grpc`).
 See examples, in various stages of maintenance, in
 [Go](https://github.com/tendermint/tendermint/tree/master/abci/server),
 [JavaScript](https://github.com/tendermint/js-abci),
-[Python](https://github.com/tendermint/tendermint/tree/master/abci/example/python3/abci),
 [C++](https://github.com/mdyring/cpp-tmsp), and
 [Java](https://github.com/jTendermint/jabci).
 
diff --git a/spec/blockchain/state.md b/spec/blockchain/state.md
index 7a2a899d1..33eec48da 100644
--- a/spec/blockchain/state.md
+++ b/spec/blockchain/state.md
@@ -107,12 +107,13 @@ func (params ConsensusParams) Hash() []byte {
 type BlockParams struct {
 	MaxBytes        int64
 	MaxGas          int64
-  TimeIotaMs      int64
+	TimeIotaMs      int64
 }
 
 type EvidenceParams struct {
 	MaxAgeNumBlocks int64
 	MaxAgeDuration  time.Duration
+	MaxNum          uint32
 }
 
 type ValidatorParams struct {