diff --git a/.github/workflows/nightly-verify.yml b/.github/workflows/nightly-verify.yml
index fb0cf30a60..14263b8836 100644
--- a/.github/workflows/nightly-verify.yml
+++ b/.github/workflows/nightly-verify.yml
@@ -18,6 +18,13 @@
 name: Verification (Nightly)
 
 on:
+  pull_request:
+    branches:
+      - main
+    paths:
+      - '.github/workflows/nightly-verify.yml'
+      - 'dev/release/verify-release-candidate.sh'
+      - 'dev/release/verify-release-candidate.ps1'
   schedule:
     - cron: "0 0 * * *"
   workflow_dispatch: {}
diff --git a/r/adbcsqlite/src/Makevars.in b/r/adbcsqlite/src/Makevars.in
index 84669a5ab9..bd1e4419a1 100644
--- a/r/adbcsqlite/src/Makevars.in
+++ b/r/adbcsqlite/src/Makevars.in
@@ -16,7 +16,7 @@
 # under the License.
 
 CXXSTD = CXX17
-PKG_CPPFLAGS=-I../src/ -I../src/c/ -I../src/c/vendor/ -I../src/c/vendor/fmt/include/ @cppflags@ -DADBC_EXPORT="" -DFMT_HEADER_ONLY=1
+PKG_CPPFLAGS=-I../src/ -I../src/c/ -I../src/c/vendor/ -I../src/c/vendor/fmt/include/ @cppflags@ -DADBC_EXPORT="" -DFMT_HEADER_ONLY=1 -D_LIBCPP_DISABLE_AVAILABILITY
 PKG_LIBS=@libs@
 
 OBJECTS = init.o \