diff --git a/.github/workflows/plugin.yaml b/.github/workflows/plugin.yaml
index e130761..8ecc646 100644
--- a/.github/workflows/plugin.yaml
+++ b/.github/workflows/plugin.yaml
@@ -16,7 +16,6 @@ jobs:
       fail-fast: false
       matrix:
         python:
-          - '3.9'
           - '3.10'
           - '3.11'
           - '3.12'
@@ -33,7 +32,6 @@ jobs:
       fail-fast: false
       matrix:
         python:
-          - '3.9'
           - '3.10'
           - '3.11'
           - '3.12'
@@ -50,7 +48,6 @@ jobs:
       fail-fast: false
       matrix:
         python:
-          - '3.9'
           - '3.10'
           - '3.11'
           - '3.12'
diff --git a/README.md b/README.md
index 9357f43..24885fc 100644
--- a/README.md
+++ b/README.md
@@ -90,7 +90,6 @@ This plugin is compatible with the same operating systems as Please itself:
 
 and is compatible with the following Python versions:
 
-- 3.9
 - 3.10
 - 3.11 (as of python-rules v1.7.0)
 - 3.12 (as of python-rules v1.7.0)
@@ -107,6 +106,7 @@ testing or running Python code under one of these versions.
 The following Python versions are no longer supported by this plugin:
 
 - 3.8 (last supported by python-rules v1.7.4)
+- 3.9 (last supported by python-rules v1.14.0)
 
 Outputs that this plugin generates may not run correctly under these Python versions, or may run
 with significantly reduced performance.
diff --git a/third_party/python/BUILD b/third_party/python/BUILD
index 8c54fea..7033b8a 100644
--- a/third_party/python/BUILD
+++ b/third_party/python/BUILD
@@ -97,12 +97,11 @@ python_wheel(
     deps = [":six"],
 )
 
-_coverage_version = "7.10.7"
+_coverage_version = "7.11.3"
 
 _coverage_tags = {
     "darwin_amd64": {
         "macosx_10_9_x86_64": [
-            ["cp39", "cp39"],
             ["cp310", "cp310"],
             ["cp311", "cp311"],
         ],
@@ -116,7 +115,6 @@ _coverage_tags = {
     },
     "darwin_arm64": {
         "macosx_11_0_arm64": [
-            ["cp39", "cp39"],
             ["cp310", "cp310"],
             ["cp311", "cp311"],
             ["cp312", "cp312"],
@@ -128,7 +126,6 @@ _coverage_tags = {
     },
     "linux_amd64": {
         "manylinux1_x86_64.manylinux_2_28_x86_64.manylinux_2_5_x86_64": [
-            ["cp39", "cp39"],
             ["cp310", "cp310"],
             ["cp311", "cp311"],
             ["cp312", "cp312"],
@@ -138,11 +135,10 @@ _coverage_tags = {
             ["cp314", "cp314t"],
         ],
         "musllinux_1_2_x86_64": [
-            # The SOABI used by musl-linked Python 3.9 and 3.10 interpreters is "x86_64-linux-gnu", making
-            # it indistinguishable from the SOABI used by glibc-linked interpreters (and causing file name
+            # The SOABI used by musl-linked Python 3.10 interpreters is "x86_64-linux-gnu", making it
+            # indistinguishable from the SOABI used by glibc-linked interpreters (and causing file name
             # collisions for the tracer shared object in the multi-arch wheel). Because of this, we aren't
-            # able to provide native-speed tracing support for musl-linked Python 3.9 and 3.10
-            # interpreters.
+            # able to provide native-speed tracing support for musl-linked Python 3.10 interpreters.
             ["cp311", "cp311"],
             ["cp312", "cp312"],
             ["cp313", "cp313"],
@@ -153,7 +149,6 @@ _coverage_tags = {
     },
     "linux_arm64": {
         "manylinux_2_17_aarch64.manylinux2014_aarch64": [
-            ["cp39", "cp39"],
             ["cp310", "cp310"],
             ["cp311", "cp311"],
             ["cp312", "cp312"],
@@ -163,10 +158,10 @@ _coverage_tags = {
             ["cp314", "cp314t"],
         ],
         "musllinux_1_2_aarch64": [
-            # The SOABI used by musl-linked Python 3.9 and 3.10 interpreters is "x86_64-linux-gnu", making
-            # it indistinguishable from the SOABI used by glibc-linked interpreters (and causing file name
+            # The SOABI used by musl-linked Python 3.10 interpreters is "x86_64-linux-gnu", making it
+            # indistinguishable from the SOABI used by glibc-linked interpreters (and causing file name
             # collisions for the tracer shared object in the multi-arch wheel). Because of this, we aren't
-            # able to provide native-speed tracing support for musl-linked Python 3.9 and 3.10
+            # able to provide native-speed tracing support for musl-linked Python 3.10 interpreters.
             # interpreters.
             ["cp311", "cp311"],
             ["cp312", "cp312"],