diff --git a/Cargo.lock b/Cargo.lock
index 2620caa..15f3936 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -22,7 +22,7 @@ dependencies = [
 
 [[package]]
 name = "belt-ctr"
-version = "0.1.0"
+version = "0.2.0-pre"
 dependencies = [
  "belt-block",
  "cipher",
@@ -46,7 +46,7 @@ dependencies = [
 
 [[package]]
 name = "cbc"
-version = "0.1.2"
+version = "0.2.0-pre"
 dependencies = [
  "aes",
  "cipher",
@@ -55,7 +55,7 @@ dependencies = [
 
 [[package]]
 name = "cfb-mode"
-version = "0.8.2"
+version = "0.9.0-pre"
 dependencies = [
  "aes",
  "belt-block",
@@ -65,7 +65,7 @@ dependencies = [
 
 [[package]]
 name = "cfb8"
-version = "0.8.1"
+version = "0.9.0-pre"
 dependencies = [
  "aes",
  "cipher",
@@ -110,7 +110,7 @@ dependencies = [
 
 [[package]]
 name = "ctr"
-version = "0.9.2"
+version = "0.10.0-pre"
 dependencies = [
  "aes",
  "cipher",
@@ -153,7 +153,7 @@ dependencies = [
 
 [[package]]
 name = "ige"
-version = "0.1.1"
+version = "0.2.0-pre"
 dependencies = [
  "aes",
  "cipher",
@@ -194,7 +194,7 @@ dependencies = [
 
 [[package]]
 name = "ofb"
-version = "0.6.1"
+version = "0.7.0-pre"
 dependencies = [
  "aes",
  "cipher",
@@ -203,7 +203,7 @@ dependencies = [
 
 [[package]]
 name = "pcbc"
-version = "0.1.2"
+version = "0.2.0-pre"
 dependencies = [
  "aes",
  "cipher",
diff --git a/belt-ctr/Cargo.toml b/belt-ctr/Cargo.toml
index d2888bb..6b1c594 100644
--- a/belt-ctr/Cargo.toml
+++ b/belt-ctr/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "belt-ctr"
-version = "0.1.0"
+version = "0.2.0-pre"
 description = "CTR block mode of operation specified by the BelT standard"
 authors = ["RustCrypto Developers"]
 license = "MIT OR Apache-2.0"
diff --git a/cbc/Cargo.toml b/cbc/Cargo.toml
index 471a80c..d83ed15 100644
--- a/cbc/Cargo.toml
+++ b/cbc/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "cbc"
-version = "0.1.2"
+version = "0.2.0-pre"
 description = "Cipher Block Chaining (CBC) block cipher mode of operation"
 authors = ["RustCrypto Developers"]
 license = "MIT OR Apache-2.0"
diff --git a/cfb-mode/Cargo.toml b/cfb-mode/Cargo.toml
index 02cad1d..0ea1945 100644
--- a/cfb-mode/Cargo.toml
+++ b/cfb-mode/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "cfb-mode"
-version = "0.8.2"
+version = "0.9.0-pre"
 description = "Cipher Feedback (CFB) block cipher mode of operation"
 authors = ["RustCrypto Developers"]
 license = "MIT OR Apache-2.0"
diff --git a/cfb8/Cargo.toml b/cfb8/Cargo.toml
index 8aa4652..6b2d56c 100644
--- a/cfb8/Cargo.toml
+++ b/cfb8/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "cfb8"
-version = "0.8.1"
+version = "0.9.0-pre"
 description = "Cipher Feedback with eight bit feedback (CFB-8) block cipher mode of operation"
 authors = ["RustCrypto Developers"]
 license = "MIT OR Apache-2.0"
diff --git a/ctr/Cargo.toml b/ctr/Cargo.toml
index 8c093ea..040a3be 100644
--- a/ctr/Cargo.toml
+++ b/ctr/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "ctr"
-version = "0.9.2"
+version = "0.10.0-pre"
 description = "CTR block modes of operation"
 authors = ["RustCrypto Developers"]
 license = "MIT OR Apache-2.0"
diff --git a/ige/Cargo.toml b/ige/Cargo.toml
index 3df4fcd..24fe472 100644
--- a/ige/Cargo.toml
+++ b/ige/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "ige"
-version = "0.1.1"
+version = "0.2.0-pre"
 description = "Infinite Garble Extension (IGE) block cipher mode of operation"
 authors = ["RustCrypto Developers"]
 license = "MIT OR Apache-2.0"
diff --git a/ofb/Cargo.toml b/ofb/Cargo.toml
index 6d3126b..65c2697 100644
--- a/ofb/Cargo.toml
+++ b/ofb/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "ofb"
-version = "0.6.1"
+version = "0.7.0-pre"
 description = "Output Feedback][OFB] (OFB) block cipher mode of operation"
 authors = ["RustCrypto Developers"]
 license = "MIT OR Apache-2.0"
diff --git a/pcbc/Cargo.toml b/pcbc/Cargo.toml
index f0ab1a6..781ea60 100644
--- a/pcbc/Cargo.toml
+++ b/pcbc/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "pcbc"
-version = "0.1.2"
+version = "0.2.0-pre"
 description = "Propagating Cipher Block Chaining (PCBC) block cipher mode of operation"
 authors = ["RustCrypto Developers"]
 license = "MIT OR Apache-2.0"