diff --git a/.ci_support/linux_64_c_stdlib_version2.17cuda_compiler_version12.9.yaml b/.ci_support/linux_64_c_stdlib_version2.17cuda_compiler_version12.9.yaml
index dd2cfee..a36de4b 100644
--- a/.ci_support/linux_64_c_stdlib_version2.17cuda_compiler_version12.9.yaml
+++ b/.ci_support/linux_64_c_stdlib_version2.17cuda_compiler_version12.9.yaml
@@ -9,7 +9,7 @@ c_stdlib:
 c_stdlib_version:
 - '2.17'
 cfitsio:
-- 4.6.3
+- 4.6.4
 channel_sources:
 - conda-forge
 channel_targets:
diff --git a/.ci_support/linux_64_c_stdlib_version2.28cuda_compiler_version13.0.yaml b/.ci_support/linux_64_c_stdlib_version2.28cuda_compiler_version13.0.yaml
index d65486c..08ca324 100644
--- a/.ci_support/linux_64_c_stdlib_version2.28cuda_compiler_version13.0.yaml
+++ b/.ci_support/linux_64_c_stdlib_version2.28cuda_compiler_version13.0.yaml
@@ -9,7 +9,7 @@ c_stdlib:
 c_stdlib_version:
 - '2.28'
 cfitsio:
-- 4.6.3
+- 4.6.4
 channel_sources:
 - conda-forge
 channel_targets:
diff --git a/.ci_support/linux_aarch64_arm_variant_typesbsac_stdlib_version2.17cuda_compiler_version12.9.yaml b/.ci_support/linux_aarch64_arm_variant_typesbsac_stdlib_version2.17cuda_compiler_version12.9.yaml
index d7a55ad..0c5a1cd 100644
--- a/.ci_support/linux_aarch64_arm_variant_typesbsac_stdlib_version2.17cuda_compiler_version12.9.yaml
+++ b/.ci_support/linux_aarch64_arm_variant_typesbsac_stdlib_version2.17cuda_compiler_version12.9.yaml
@@ -11,7 +11,7 @@ c_stdlib:
 c_stdlib_version:
 - '2.17'
 cfitsio:
-- 4.6.3
+- 4.6.4
 channel_sources:
 - conda-forge
 channel_targets:
diff --git a/.ci_support/linux_aarch64_arm_variant_typesbsac_stdlib_version2.28cuda_compiler_version13.0.yaml b/.ci_support/linux_aarch64_arm_variant_typesbsac_stdlib_version2.28cuda_compiler_version13.0.yaml
index 5ff433e..39d8d8e 100644
--- a/.ci_support/linux_aarch64_arm_variant_typesbsac_stdlib_version2.28cuda_compiler_version13.0.yaml
+++ b/.ci_support/linux_aarch64_arm_variant_typesbsac_stdlib_version2.28cuda_compiler_version13.0.yaml
@@ -11,7 +11,7 @@ c_stdlib:
 c_stdlib_version:
 - '2.28'
 cfitsio:
-- 4.6.3
+- 4.6.4
 channel_sources:
 - conda-forge
 channel_targets:
diff --git a/.ci_support/linux_aarch64_arm_variant_typetegrac_stdlib_version2.34cuda_compiler_version12.9.yaml b/.ci_support/linux_aarch64_arm_variant_typetegrac_stdlib_version2.34cuda_compiler_version12.9.yaml
index 2642b37..94bee52 100644
--- a/.ci_support/linux_aarch64_arm_variant_typetegrac_stdlib_version2.34cuda_compiler_version12.9.yaml
+++ b/.ci_support/linux_aarch64_arm_variant_typetegrac_stdlib_version2.34cuda_compiler_version12.9.yaml
@@ -11,7 +11,7 @@ c_stdlib:
 c_stdlib_version:
 - '2.34'
 cfitsio:
-- 4.6.3
+- 4.6.4
 channel_sources:
 - conda-forge
 channel_targets:
diff --git a/.ci_support/migrations/cfitsio464.yaml b/.ci_support/migrations/cfitsio464.yaml
new file mode 100644
index 0000000..e86c7bf
--- /dev/null
+++ b/.ci_support/migrations/cfitsio464.yaml
@@ -0,0 +1,8 @@
+__migrator:
+  build_number: 1
+  commit_message: Rebuild for cfitsio 4.6.4
+  kind: version
+  migration_number: 1
+cfitsio:
+- 4.6.4
+migrator_ts: 1777485412.704508
diff --git a/recipe/recipe.yaml b/recipe/recipe.yaml
index b947bc4..7ad5495 100644
--- a/recipe/recipe.yaml
+++ b/recipe/recipe.yaml
@@ -23,7 +23,7 @@ source:
     target_directory: third_party/ffts
 
 build:
-  number: 0
+  number: 1
   skip:
     - cuda_compiler_version == "None"
     - win