diff --git a/.ci_support/linux_64_openssl1.1.1.yaml b/.ci_support/linux_64_openssl1.1.1.yaml
index 32d4dc6a..389441e6 100644
--- a/.ci_support/linux_64_openssl1.1.1.yaml
+++ b/.ci_support/linux_64_openssl1.1.1.yaml
@@ -91,7 +91,7 @@ poppler:
 postgresql:
 - '15'
 proj:
-- 9.1.1
+- 9.1.0
 python:
 - 3.10.* *_cpython
 - 3.11.* *_cpython
diff --git a/.ci_support/linux_64_openssl3.yaml b/.ci_support/linux_64_openssl3.yaml
index 6bfe976d..a9f496bb 100644
--- a/.ci_support/linux_64_openssl3.yaml
+++ b/.ci_support/linux_64_openssl3.yaml
@@ -91,7 +91,7 @@ poppler:
 postgresql:
 - '15'
 proj:
-- 9.1.1
+- 9.1.0
 python:
 - 3.10.* *_cpython
 - 3.11.* *_cpython
diff --git a/.ci_support/linux_aarch64_openssl1.1.1.yaml b/.ci_support/linux_aarch64_openssl1.1.1.yaml
index c17b7f2a..e65e1e20 100644
--- a/.ci_support/linux_aarch64_openssl1.1.1.yaml
+++ b/.ci_support/linux_aarch64_openssl1.1.1.yaml
@@ -95,7 +95,7 @@ poppler:
 postgresql:
 - '15'
 proj:
-- 9.1.1
+- 9.1.0
 python:
 - 3.10.* *_cpython
 - 3.11.* *_cpython
diff --git a/.ci_support/linux_aarch64_openssl3.yaml b/.ci_support/linux_aarch64_openssl3.yaml
index c28b53ff..0edcbc16 100644
--- a/.ci_support/linux_aarch64_openssl3.yaml
+++ b/.ci_support/linux_aarch64_openssl3.yaml
@@ -95,7 +95,7 @@ poppler:
 postgresql:
 - '15'
 proj:
-- 9.1.1
+- 9.1.0
 python:
 - 3.10.* *_cpython
 - 3.11.* *_cpython
diff --git a/.ci_support/linux_ppc64le_openssl1.1.1.yaml b/.ci_support/linux_ppc64le_openssl1.1.1.yaml
index e16fa15c..09f2481c 100644
--- a/.ci_support/linux_ppc64le_openssl1.1.1.yaml
+++ b/.ci_support/linux_ppc64le_openssl1.1.1.yaml
@@ -91,7 +91,7 @@ poppler:
 postgresql:
 - '15'
 proj:
-- 9.1.1
+- 9.1.0
 python:
 - 3.10.* *_cpython
 - 3.11.* *_cpython
diff --git a/.ci_support/linux_ppc64le_openssl3.yaml b/.ci_support/linux_ppc64le_openssl3.yaml
index 9ad9ca59..1cd6d575 100644
--- a/.ci_support/linux_ppc64le_openssl3.yaml
+++ b/.ci_support/linux_ppc64le_openssl3.yaml
@@ -91,7 +91,7 @@ poppler:
 postgresql:
 - '15'
 proj:
-- 9.1.1
+- 9.1.0
 python:
 - 3.10.* *_cpython
 - 3.11.* *_cpython
diff --git a/.ci_support/migrations/proj911.yaml b/.ci_support/migrations/proj911.yaml
deleted file mode 100644
index 862cd8a0..00000000
--- a/.ci_support/migrations/proj911.yaml
+++ /dev/null
@@ -1,7 +0,0 @@
-__migrator:
-  build_number: 1
-  kind: version
-  migration_number: 1
-migrator_ts: 1670688425.6669424
-proj:
-- 9.1.1
diff --git a/.ci_support/osx_64_openssl1.1.1.yaml b/.ci_support/osx_64_openssl1.1.1.yaml
index c74d5366..c22eb79a 100644
--- a/.ci_support/osx_64_openssl1.1.1.yaml
+++ b/.ci_support/osx_64_openssl1.1.1.yaml
@@ -89,7 +89,7 @@ poppler:
 postgresql:
 - '15'
 proj:
-- 9.1.1
+- 9.1.0
 python:
 - 3.10.* *_cpython
 - 3.11.* *_cpython
diff --git a/.ci_support/osx_64_openssl3.yaml b/.ci_support/osx_64_openssl3.yaml
index 5c892b11..772f3514 100644
--- a/.ci_support/osx_64_openssl3.yaml
+++ b/.ci_support/osx_64_openssl3.yaml
@@ -89,7 +89,7 @@ poppler:
 postgresql:
 - '15'
 proj:
-- 9.1.1
+- 9.1.0
 python:
 - 3.10.* *_cpython
 - 3.11.* *_cpython
diff --git a/.ci_support/osx_arm64_openssl1.1.1.yaml b/.ci_support/osx_arm64_openssl1.1.1.yaml
index 99df315e..cc0e3171 100644
--- a/.ci_support/osx_arm64_openssl1.1.1.yaml
+++ b/.ci_support/osx_arm64_openssl1.1.1.yaml
@@ -89,7 +89,7 @@ poppler:
 postgresql:
 - '15'
 proj:
-- 9.1.1
+- 9.1.0
 python:
 - 3.10.* *_cpython
 - 3.11.* *_cpython
diff --git a/.ci_support/osx_arm64_openssl3.yaml b/.ci_support/osx_arm64_openssl3.yaml
index 18aa1740..f6527a39 100644
--- a/.ci_support/osx_arm64_openssl3.yaml
+++ b/.ci_support/osx_arm64_openssl3.yaml
@@ -89,7 +89,7 @@ poppler:
 postgresql:
 - '15'
 proj:
-- 9.1.1
+- 9.1.0
 python:
 - 3.10.* *_cpython
 - 3.11.* *_cpython
diff --git a/.ci_support/win_64_openssl1.1.1.yaml b/.ci_support/win_64_openssl1.1.1.yaml
index 67a80ce8..ecc7d851 100644
--- a/.ci_support/win_64_openssl1.1.1.yaml
+++ b/.ci_support/win_64_openssl1.1.1.yaml
@@ -77,7 +77,7 @@ poppler:
 postgresql:
 - '15'
 proj:
-- 9.1.1
+- 9.1.0
 python:
 - 3.10.* *_cpython
 - 3.11.* *_cpython
diff --git a/.ci_support/win_64_openssl3.yaml b/.ci_support/win_64_openssl3.yaml
index 9b77a59c..cfcd45d5 100644
--- a/.ci_support/win_64_openssl3.yaml
+++ b/.ci_support/win_64_openssl3.yaml
@@ -77,7 +77,7 @@ poppler:
 postgresql:
 - '15'
 proj:
-- 9.1.1
+- 9.1.0
 python:
 - 3.10.* *_cpython
 - 3.11.* *_cpython
diff --git a/recipe/meta.yaml b/recipe/meta.yaml
index d1086913..061ed4da 100644
--- a/recipe/meta.yaml
+++ b/recipe/meta.yaml
@@ -9,7 +9,7 @@ source:
   sha256: 35f40d2e08061b342513cdcddc2b997b3814ef8254514f0ef1e8bc7aa56cf681
 
 build:
-  number: 0
+  number: 1
   skip_compile_pyc:
     - share/bash-completion/completions/*.py