diff --git a/.github/workflows/rust.yml b/.github/workflows/rust.yml
index 3ef7cbbefc1..acea1a8603e 100644
--- a/.github/workflows/rust.yml
+++ b/.github/workflows/rust.yml
@@ -252,7 +252,7 @@ jobs:
     runs-on: ubuntu-24.04
     strategy:
       matrix:
-        msrv: ["1.88.0"] # This should match up with rust-version in Cargo.toml
+        msrv: ["1.91.0"] # This should match up with rust-version in Cargo.toml
     env:
       # Need up-to-date compilers for kernels
       CC: clang
diff --git a/Cargo.toml b/Cargo.toml
index b080335a735..7e3d84cf864 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -47,7 +47,7 @@ categories = [
     "development-tools",
     "science",
 ]
-rust-version = "1.88.0"
+rust-version = "1.91.0"
 
 [workspace.dependencies]
 libc = "0.2.176"
diff --git a/java/lance-jni/Cargo.toml b/java/lance-jni/Cargo.toml
index 43624a70e5f..07a4f6f02ca 100644
--- a/java/lance-jni/Cargo.toml
+++ b/java/lance-jni/Cargo.toml
@@ -3,7 +3,7 @@ name = "lance-jni"
 version = "3.0.0-beta.2"
 edition = "2021"
 authors = ["Lance Devs <dev@lance.org>"]
-rust-version = "1.88"
+rust-version = "1.91"
 license = "Apache-2.0"
 repository = "https://github.com/lance-format/lance"
 readme = "../../README.md"
diff --git a/python/Cargo.toml b/python/Cargo.toml
index 4b06cd50198..3f15259a9cb 100644
--- a/python/Cargo.toml
+++ b/python/Cargo.toml
@@ -4,7 +4,7 @@ version = "3.0.0-beta.2"
 edition = "2021"
 authors = ["Lance Devs <dev@lance.org>"]
 license = "Apache-2.0"
-rust-version = "1.88"
+rust-version = "1.91"
 exclude = ["python/lance/conftest.py"]
 publish = false