diff --git a/.github/workflows/golangci-lint.yml b/.github/workflows/golangci-lint.yml
index 454d0f24471..b3beee6973c 100644
--- a/.github/workflows/golangci-lint.yml
+++ b/.github/workflows/golangci-lint.yml
@@ -34,7 +34,7 @@ jobs:
         run: git config --global --add safe.directory $(pwd)
       - name: Install libgit2 1.5 for git2go v34
         run: backend/scripts/install-libgit2.sh
-      - name: Install Go 1.26.2
+      - name: Install Go 1.26.6
         run: backend/scripts/install-go.sh
       - name: Install mockery 3.7.2
         run: backend/scripts/install-mockery.sh
diff --git a/.github/workflows/test-e2e.yml b/.github/workflows/test-e2e.yml
index 6e17826ad3b..da4b96c8245 100644
--- a/.github/workflows/test-e2e.yml
+++ b/.github/workflows/test-e2e.yml
@@ -52,7 +52,7 @@ jobs:
       - run: git config --global --add safe.directory $(pwd)
       - name: Install libgit2 1.5 for git2go v34
         run: backend/scripts/install-libgit2.sh
-      - name: Install Go 1.26.2
+      - name: Install Go 1.26.6
         run: backend/scripts/install-go.sh
       - name: Build Python
         run: |
@@ -96,7 +96,7 @@ jobs:
       - run: git config --global --add safe.directory $(pwd)
       - name: Install libgit2 1.5 for git2go v34
         run: backend/scripts/install-libgit2.sh
-      - name: Install Go 1.26.2
+      - name: Install Go 1.26.6
         run: backend/scripts/install-go.sh
       - name: Build Python
         run: |
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 6e3f88c3a02..72d50c73256 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -49,7 +49,7 @@ jobs:
       run: git config --global --add safe.directory $(pwd)
     - name: Install libgit2 1.5 for git2go v34
       run: backend/scripts/install-libgit2.sh
-    - name: Install Go 1.26.2
+    - name: Install Go 1.26.6
       run: backend/scripts/install-go.sh
     - name: Install mockery 3.7.2
       run: backend/scripts/install-mockery.sh
diff --git a/backend/scripts/install-go.sh b/backend/scripts/install-go.sh
index 15a44c20c14..d4c3c1f2a45 100755
--- a/backend/scripts/install-go.sh
+++ b/backend/scripts/install-go.sh
@@ -17,7 +17,7 @@
 
 set -eu
 
-GO_VERSION=1.26.2
+GO_VERSION=1.26.6
 INSTALL_DIR=/opt/go/$GO_VERSION
 GO_BIN=$INSTALL_DIR/bin/go
 
@@ -54,11 +54,11 @@ fi
 case "$(uname -m)" in
     x86_64|amd64)
         archive_name=go${GO_VERSION}.linux-amd64.tar.gz
-        archive_sha256=990e6b4bbba816dc3ee129eaeaf4b42f17c2800b88a2166c265ac1a200262282
+        archive_sha256=708effb774be8237570d0add163225abbdfaf4fca28b2611df167beba4feef89
         ;;
     aarch64|arm64)
         archive_name=go${GO_VERSION}.linux-arm64.tar.gz
-        archive_sha256=c958a1fe1b361391db163a485e21f5f228142d6f8b584f6bef89b26f66dc5b23
+        archive_sha256=d0507e9e9d7fe012aae570108cbd76c15de879e17130ab8cb90d4d7445cb1f2e
         ;;
     *)
         echo "unsupported architecture: $(uname -m)" >&2