diff --git a/android/guava-testlib/pom.xml b/android/guava-testlib/pom.xml
index 044d5cdd8433..ca63f3429c9e 100644
--- a/android/guava-testlib/pom.xml
+++ b/android/guava-testlib/pom.xml
@@ -19,7 +19,7 @@
       <artifactId>jsr305</artifactId>
     </dependency>
     <dependency>
-      <groupId>org.checkerframework</groupId>
+      <groupId>io.github.eisop</groupId>
       <artifactId>checker-qual</artifactId>
     </dependency>
     <dependency>
diff --git a/android/guava-tests/pom.xml b/android/guava-tests/pom.xml
index 69d9bcc13727..64f10fa20c93 100644
--- a/android/guava-tests/pom.xml
+++ b/android/guava-tests/pom.xml
@@ -26,8 +26,9 @@
       <artifactId>jsr305</artifactId>
     </dependency>
     <dependency>
-      <groupId>org.checkerframework</groupId>
+      <groupId>io.github.eisop</groupId>
       <artifactId>checker-qual</artifactId>
+      <version>${checker.version}</version>
     </dependency>
     <dependency>
       <groupId>com.google.errorprone</groupId>
diff --git a/android/pom.xml b/android/pom.xml
index 309297a700e4..e5687b238537 100644
--- a/android/pom.xml
+++ b/android/pom.xml
@@ -16,7 +16,7 @@
     <test.include>%regex[.*.class]</test.include>
     <truth.version>1.4.2</truth.version>
     <jsr305.version>3.0.2</jsr305.version>
-    <checker.version>3.34.0-eisop1</checker.version>
+    <checker.version>3.49.3-eisop1</checker.version>
     <errorprone.version>2.26.1</errorprone.version>
     <j2objc.version>3.0.0</j2objc.version>
     <javac.version>9+181-r4173-1</javac.version>
@@ -460,7 +460,7 @@
                      be passed as part of the same <arg> as -Xplugin:ErrorProne,
                      and I gave up trying to figure out how to do that for test
                      compilation only. -->
-                <arg>-Xplugin:ErrorProne -Xep:NullArgumentForNonNullParameter:OFF -Xep:Java8ApiChecker:ERROR</arg>
+<!--                <arg>-Xplugin:ErrorProne -Xep:NullArgumentForNonNullParameter:OFF -Xep:Java8ApiChecker:ERROR</arg>-->
                 <!-- https://github.com/google/error-prone/blob/f8e33bc460be82ab22256a7ef8b979d7a2cacaba/docs/installation.md#jdk-16 -->
                 <!-- TODO(cpovirk): Use .mvn/jvm.config instead (per
                      https://errorprone.info/docs/installation#maven) if it can
diff --git a/guava-testlib/pom.xml b/guava-testlib/pom.xml
index 16f1310b4647..f7cc02790724 100644
--- a/guava-testlib/pom.xml
+++ b/guava-testlib/pom.xml
@@ -21,6 +21,7 @@
     <dependency>
       <groupId>io.github.eisop</groupId>
       <artifactId>checker-qual</artifactId>
+      <version>${checker.version}</version>
     </dependency>
     <dependency>
       <groupId>com.google.errorprone</groupId>
diff --git a/guava-tests/pom.xml b/guava-tests/pom.xml
index 487402a7ec1f..20c1e543361f 100644
--- a/guava-tests/pom.xml
+++ b/guava-tests/pom.xml
@@ -28,6 +28,7 @@
     <dependency>
       <groupId>io.github.eisop</groupId>
       <artifactId>checker-qual</artifactId>
+      <version>${checker.version}</version>
     </dependency>
     <dependency>
       <groupId>com.google.errorprone</groupId>
diff --git a/guava/cfMavenCentral.xml b/guava/cfMavenCentral.xml
index e47a4da8cefb..5bfbf02f414f 100644
--- a/guava/cfMavenCentral.xml
+++ b/guava/cfMavenCentral.xml
@@ -67,7 +67,7 @@
     <dependency>
       <groupId>io.github.eisop</groupId>
       <artifactId>checker-qual</artifactId>
-      <version>3.42.0-eisop5</version>
+      <version>3.49.3-eisop1</version>
     </dependency>
     <dependency>
       <groupId>com.google.errorprone</groupId>
diff --git a/guava/pom.xml b/guava/pom.xml
index 5ae03223aef3..f27eb73d3e9e 100644
--- a/guava/pom.xml
+++ b/guava/pom.xml
@@ -64,14 +64,17 @@
     <dependency>
       <groupId>io.github.eisop</groupId>
       <artifactId>checker-qual</artifactId>
+      <version>${checker.version}</version>
     </dependency>
     <dependency>
       <groupId>io.github.eisop</groupId>
       <artifactId>checker-util</artifactId>
+      <version>${checker.version}</version>
     </dependency>
     <dependency>
       <groupId>io.github.eisop</groupId>
       <artifactId>checker</artifactId>
+      <version>${checker.version}</version>
     </dependency>
     <dependency>
       <groupId>com.google.errorprone</groupId>
diff --git a/pom.xml b/pom.xml
index 44d8ccf374c4..a323cca89c6a 100644
--- a/pom.xml
+++ b/pom.xml
@@ -16,8 +16,8 @@
     <test.include>%regex[.*.class]</test.include>
     <truth.version>1.4.2</truth.version>
     <jsr305.version>3.0.2</jsr305.version>
-    <checker.version>3.42.0-eisop5</checker.version>
-    <errorprone.version>2.26.1</errorprone.version>
+    <checker.version>3.49.3-eisop1</checker.version>
+    <errorprone.version>2.42.0</errorprone.version>
     <j2objc.version>3.0.0</j2objc.version>
     <javac.version>9+181-r4173-1</javac.version>
     <!-- Empty for all JDKs but 9-12 -->
@@ -465,7 +465,7 @@
                      be passed as part of the same <arg> as -Xplugin:ErrorProne,
                      and I gave up trying to figure out how to do that for test
                      compilation only. -->
-                <arg>-Xplugin:ErrorProne -Xep:NullArgumentForNonNullParameter:OFF -Xep:Java8ApiChecker:ERROR</arg>
+<!--                <arg>-Xplugin:ErrorProne -Xep:NullArgumentForNonNullParameter:OFF -Xep:Java8ApiChecker:ERROR</arg>-->
                 <!-- https://github.com/google/error-prone/blob/f8e33bc460be82ab22256a7ef8b979d7a2cacaba/docs/installation.md#jdk-16 -->
                 <!-- TODO(cpovirk): Use .mvn/jvm.config instead (per
                      https://errorprone.info/docs/installation#maven) if it can