diff --git a/java/Dockerfile.java21 b/java/Dockerfile.java21
index 8072bbe..21c6c0f 100644
--- a/java/Dockerfile.java21
+++ b/java/Dockerfile.java21
@@ -1,4 +1,4 @@
-FROM gitea.bobert.me/anthorob/coder-base:latest
+FROM gitea.bobert.me/anthorob/coder-base:latest@sha256:1ae71ab85f5e4e79dbcf6019a955037858e1618b3eac890f7abc2ef17a922de7
 
 USER root
 
diff --git a/php/Dockerfile.php82 b/php/Dockerfile.php82
index 35516b3..2f2aeef 100644
--- a/php/Dockerfile.php82
+++ b/php/Dockerfile.php82
@@ -1,4 +1,4 @@
-FROM gitea.bobert.me/anthorob/coder-base:latest
+FROM gitea.bobert.me/anthorob/coder-base:latest@sha256:1ae71ab85f5e4e79dbcf6019a955037858e1618b3eac890f7abc2ef17a922de7
 
 USER root
 
diff --git a/php/Dockerfile.php84 b/php/Dockerfile.php84
index a5eeb1c..52c7c2a 100644
--- a/php/Dockerfile.php84
+++ b/php/Dockerfile.php84
@@ -1,4 +1,4 @@
-FROM gitea.bobert.me/anthorob/coder-base:latest
+FROM gitea.bobert.me/anthorob/coder-base:latest@sha256:1ae71ab85f5e4e79dbcf6019a955037858e1618b3eac890f7abc2ef17a922de7
 
 USER root
 
diff --git a/python/Dockerfile.python3 b/python/Dockerfile.python3
index 4f381e3..1d8425e 100644
--- a/python/Dockerfile.python3
+++ b/python/Dockerfile.python3
@@ -1,4 +1,4 @@
-FROM gitea.bobert.me/anthorob/coder-base:latest
+FROM gitea.bobert.me/anthorob/coder-base:latest@sha256:1ae71ab85f5e4e79dbcf6019a955037858e1618b3eac890f7abc2ef17a922de7
 
 USER root