diff --git a/.ci_support/linux_64_openssl1.1.1.yaml b/.ci_support/linux_64_openssl1.1.1.yaml
index 957fddd..c8035e6 100644
--- a/.ci_support/linux_64_openssl1.1.1.yaml
+++ b/.ci_support/linux_64_openssl1.1.1.yaml
@@ -23,7 +23,7 @@ libcrc32c:
 libcurl:
 - '7'
 libprotobuf:
-- '3.20'
+- '3.21'
 openssl:
 - 1.1.1
 pin_run_as_build:
diff --git a/.ci_support/linux_64_openssl3.yaml b/.ci_support/linux_64_openssl3.yaml
index cca2f3a..7558955 100644
--- a/.ci_support/linux_64_openssl3.yaml
+++ b/.ci_support/linux_64_openssl3.yaml
@@ -23,7 +23,7 @@ libcrc32c:
 libcurl:
 - '7'
 libprotobuf:
-- '3.20'
+- '3.21'
 openssl:
 - '3'
 pin_run_as_build:
diff --git a/.ci_support/linux_aarch64_openssl1.1.1.yaml b/.ci_support/linux_aarch64_openssl1.1.1.yaml
index b748a47..1f15b47 100644
--- a/.ci_support/linux_aarch64_openssl1.1.1.yaml
+++ b/.ci_support/linux_aarch64_openssl1.1.1.yaml
@@ -27,7 +27,7 @@ libcrc32c:
 libcurl:
 - '7'
 libprotobuf:
-- '3.20'
+- '3.21'
 openssl:
 - 1.1.1
 pin_run_as_build:
diff --git a/.ci_support/linux_aarch64_openssl3.yaml b/.ci_support/linux_aarch64_openssl3.yaml
index d1de3f9..1aa2832 100644
--- a/.ci_support/linux_aarch64_openssl3.yaml
+++ b/.ci_support/linux_aarch64_openssl3.yaml
@@ -27,7 +27,7 @@ libcrc32c:
 libcurl:
 - '7'
 libprotobuf:
-- '3.20'
+- '3.21'
 openssl:
 - '3'
 pin_run_as_build:
diff --git a/.ci_support/linux_ppc64le_openssl1.1.1.yaml b/.ci_support/linux_ppc64le_openssl1.1.1.yaml
index 58a66d5..5111e1c 100644
--- a/.ci_support/linux_ppc64le_openssl1.1.1.yaml
+++ b/.ci_support/linux_ppc64le_openssl1.1.1.yaml
@@ -23,7 +23,7 @@ libcrc32c:
 libcurl:
 - '7'
 libprotobuf:
-- '3.20'
+- '3.21'
 openssl:
 - 1.1.1
 pin_run_as_build:
diff --git a/.ci_support/linux_ppc64le_openssl3.yaml b/.ci_support/linux_ppc64le_openssl3.yaml
index 7ff7741..bed2d9c 100644
--- a/.ci_support/linux_ppc64le_openssl3.yaml
+++ b/.ci_support/linux_ppc64le_openssl3.yaml
@@ -23,7 +23,7 @@ libcrc32c:
 libcurl:
 - '7'
 libprotobuf:
-- '3.20'
+- '3.21'
 openssl:
 - '3'
 pin_run_as_build:
diff --git a/.ci_support/migrations/libprotobuf321.yaml b/.ci_support/migrations/libprotobuf321.yaml
new file mode 100644
index 0000000..41701fa
--- /dev/null
+++ b/.ci_support/migrations/libprotobuf321.yaml
@@ -0,0 +1,7 @@
+__migrator:
+  build_number: 1
+  kind: version
+  migration_number: 1
+libprotobuf:
+- '3.21'
+migrator_ts: 1661531047.2553904
diff --git a/.ci_support/osx_64_openssl1.1.1.yaml b/.ci_support/osx_64_openssl1.1.1.yaml
index 9b2a5f3..ed31540 100644
--- a/.ci_support/osx_64_openssl1.1.1.yaml
+++ b/.ci_support/osx_64_openssl1.1.1.yaml
@@ -21,7 +21,7 @@ libcrc32c:
 libcurl:
 - '7'
 libprotobuf:
-- '3.20'
+- '3.21'
 macos_machine:
 - x86_64-apple-darwin13.4.0
 openssl:
diff --git a/.ci_support/osx_64_openssl3.yaml b/.ci_support/osx_64_openssl3.yaml
index b7b73ec..78ed6da 100644
--- a/.ci_support/osx_64_openssl3.yaml
+++ b/.ci_support/osx_64_openssl3.yaml
@@ -21,7 +21,7 @@ libcrc32c:
 libcurl:
 - '7'
 libprotobuf:
-- '3.20'
+- '3.21'
 macos_machine:
 - x86_64-apple-darwin13.4.0
 openssl:
diff --git a/.ci_support/osx_arm64_openssl1.1.1.yaml b/.ci_support/osx_arm64_openssl1.1.1.yaml
index 3f64a91..d987c29 100644
--- a/.ci_support/osx_arm64_openssl1.1.1.yaml
+++ b/.ci_support/osx_arm64_openssl1.1.1.yaml
@@ -21,7 +21,7 @@ libcrc32c:
 libcurl:
 - '7'
 libprotobuf:
-- '3.20'
+- '3.21'
 macos_machine:
 - arm64-apple-darwin20.0.0
 openssl:
diff --git a/.ci_support/osx_arm64_openssl3.yaml b/.ci_support/osx_arm64_openssl3.yaml
index 68996d0..578db61 100644
--- a/.ci_support/osx_arm64_openssl3.yaml
+++ b/.ci_support/osx_arm64_openssl3.yaml
@@ -21,7 +21,7 @@ libcrc32c:
 libcurl:
 - '7'
 libprotobuf:
-- '3.20'
+- '3.21'
 macos_machine:
 - arm64-apple-darwin20.0.0
 openssl:
diff --git a/.ci_support/win_64_openssl1.1.1.yaml b/.ci_support/win_64_openssl1.1.1.yaml
index 2bc0459..4aeb66c 100644
--- a/.ci_support/win_64_openssl1.1.1.yaml
+++ b/.ci_support/win_64_openssl1.1.1.yaml
@@ -15,7 +15,7 @@ libcrc32c:
 libcurl:
 - '7'
 libprotobuf:
-- '3.20'
+- '3.21'
 openssl:
 - 1.1.1
 pin_run_as_build:
diff --git a/.ci_support/win_64_openssl3.yaml b/.ci_support/win_64_openssl3.yaml
index a15c5aa..bddad1e 100644
--- a/.ci_support/win_64_openssl3.yaml
+++ b/.ci_support/win_64_openssl3.yaml
@@ -15,7 +15,7 @@ libcrc32c:
 libcurl:
 - '7'
 libprotobuf:
-- '3.20'
+- '3.21'
 openssl:
 - '3'
 pin_run_as_build:
diff --git a/recipe/meta.yaml b/recipe/meta.yaml
index b23418b..25d35ef 100644
--- a/recipe/meta.yaml
+++ b/recipe/meta.yaml
@@ -10,7 +10,7 @@ source:
   sha256: 168c38219feb5a2c6b81bec5960cd067f6cda3daa83cd9761fa04f27d2b78f17
 
 build:
-  number: 2
+  number: 3
 requirements:
   build:
     - {{ compiler('c') }}