diff --git a/build.gradle b/build.gradle
index 92e9976b6d..e82d740d60 100644
--- a/build.gradle
+++ b/build.gradle
@@ -268,6 +268,8 @@ allprojects {
                     force "jakarta.activation:jakarta.activation-api:${jakartaActivationApiVersion}"
                     // SequenceAnalysis brings in an older version via biojava-genome 7.1.1
                     force "jakarta.xml.bind:jakarta.xml.bind-api:${jaxbApiVersion}"
+                    // professional's spring-ai dependencies require 3.0.0; graphMailTransport's Microsoft Graph SDK pulls 2.1.1 transitively
+                    force "jakarta.annotation:jakarta.annotation-api:${jakartaAnnotationApiVersion}"
                     // force version for accounts, api, query
                     force "javax.validation:validation-api:${validationApiVersion}"
                     // force version for accounts, docker, api
diff --git a/gradle.properties b/gradle.properties
index f7b717aa47..9713b4d47d 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -208,6 +208,10 @@ jackson3Version=3.1.5
 # The Jakarta Activation API version that Angus Activation implements. Keep in sync with angusActivationVersion (above).
 jakartaActivationApiVersion=2.1.4
 
+# Version required by professional's spring-ai dependencies; graphMailTransport's Microsoft Graph SDK pulls 2.1.1
+# transitively, but only references Nonnull/Nullable/PostConstruct/etc., all present unchanged in 3.0.0.
+jakartaAnnotationApiVersion=3.0.0
+
 jamaVersion=1.0.3
 
 javassistVersion=3.20.0-GA